Rezumat problemă

Detalii

Problema	radical1	Operații I/O	tastatură/ecran
Limita timp	0.1 secunde	Limita memorie	Total: 64 MB / Stivă 8 MB
Id soluție	#54091072	Utilizator	Seclaman Everin (Bluess)
Fișier	radical1.cpp	Dimensiune	116 B
Data încărcării	19 Noiembrie 2024, 16:03	Scor / rezultat	Eroare de compilare

Evaluare

Mesaj compilare

radical1.cpp: In function 'int main()':
radical1.cpp:7:10: error: no match for 'operator>>' (operand types are 'std::ostream {aka std::basic_ostream<char>}' and 'double')
     cout >> sqrt (a);

          ^
radical1.cpp:7:10: note: candidates are:
In file included from /usr/include/c++/4.8/string:53:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from radical1.cpp:1:
/usr/include/c++/4.8/bits/basic_string.tcc:996:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::basic_string<_CharT, _Traits, _Alloc>&)
     operator>>(basic_istream<_CharT, _Traits>& __in,
     ^
/usr/include/c++/4.8/bits/basic_string.tcc:996:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/istream:882:0,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from radical1.cpp:1:
/usr/include/c++/4.8/bits/istream.tcc:955:5: note: template<class _CharT2, class _Traits2> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT2*)
     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s)
     ^
/usr/include/c++/4.8/bits/istream.tcc:955:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/istream:882:0,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from radical1.cpp:1:
/usr/include/c++/4.8/bits/istream.tcc:923:5: note: template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT&)
     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c)
     ^
/usr/include/c++/4.8/bits/istream.tcc:923:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/sstream:38:0,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from radical1.cpp:1:
/usr/include/c++/4.8/istream:727:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char&)
     operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c)
     ^
/usr/include/c++/4.8/istream:727:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/sstream:38:0,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from radical1.cpp:1:
/usr/include/c++/4.8/istream:732:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char&)
     operator>>(basic_istream<char, _Traits>& __in, signed char& __c)
     ^
/usr/include/c++/4.8/istream:732:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/sstream:38:0,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from radical1.cpp:1:
/usr/include/c++/4.8/istream:774:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char*)
     operator>>(basic_istream<char, _Traits>& __in, unsigned char* __s)
     ^
/usr/include/c++/4.8/istream:774:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/sstream:38:0,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from radical1.cpp:1:
/usr/include/c++/4.8/istream:779:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char*)
     operator>>(basic_istream<char, _Traits>& __in, signed char* __s)
     ^
/usr/include/c++/4.8/istream:779:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/sstream:38:0,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from radical1.cpp:1:
/usr/include/c++/4.8/istream:872:5: note: template<class _CharT, class _Traits, class _Tp> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&&, _Tp&)
     operator>>(basic_istream<_CharT, _Traits>&& __is, _Tp& __x)
     ^
/usr/include/c++/4.8/istream:872:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/ccomplex:38:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from radical1.cpp:1:
/usr/include/c++/4.8/complex:491:5: note: template<class _Tp, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::complex<_Tp>&)
     operator>>(basic_istream<_CharT, _Traits>& __is, complex<_Tp>& __x)
     ^
/usr/include/c++/4.8/complex:491:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from radical1.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:505:5: note: template<class _UIntType1, unsigned int __w1, unsigned int __n1, unsigned int __m1, unsigned int __r1, _UIntType1 __a1, unsigned int __u1, _UIntType1 __d1, unsigned int __s1, _UIntType1 __b1, unsigned int __t1, _UIntType1 __c1, unsigned int __l1, _UIntType1 __f1, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::mersenne_twister_engine<_UIntType, __w, __n, __m, __r, __a, __u, __d, __s, __b, __t, __c, __l, __f>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:505:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from radical1.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:1050:5: note: template<class _IntType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::uniform_int_distribution<_IntType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:1050:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from radical1.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:1112:5: note: template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::uniform_real_distribution<_IntType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:1112:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from radical1.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:2299:5: note: template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::cauchy_distribution<_RealType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:2299:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/random:50:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from radical1.cpp:1:
/usr/include/c++/4.8/bits/random.h:3759:5: note: template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::bernoulli_distribution&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.h:3759:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from radical1.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:2077:5: note: template<class _RealType1, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::normal_distribution<_RealType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:2077:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from radical1.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:1256:5: note: template<class _IntType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::geometric_distribution<_IntType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:1256:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from radical1.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:2621:5: note: template<class _RealType1, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::gamma_distribution<_RealType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:2621:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from radical1.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:1906:5: note: template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::exponential_distribution<_RealType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:1906:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from radical1.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:2698:5: note: template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::weibull_distribution<_RealType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:2698:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from radical1.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:2774:5: note: template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::extreme_value_distribution<_RealType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:2774:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from radical1.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:178:5: note: template<class _UIntType, _UIntType __a, _UIntType __c, _UIntType __m, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::linear_congruential_engine<_UIntType, __a, __c, __m>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:178:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from radical1.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:657:5: note: template<class _UIntType, unsigned int __w, unsigned int __s, unsigned int __r, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::subtract_with_carry_engine<_UIntType, __w, __s, __r>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:657:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from radical1.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:725:5: note: template<class _RandomNumberEngine, unsigned int __p, unsigned int __r, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::discard_block_engine<_RandomNumberEngine, __p, __r>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:725:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from radical1.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:856:5: note: template<class _RandomNumberEngine, unsigned int __k, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::shuffle_order_engine<_RandomNumberEngine, __k>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:856:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from radical1.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:1372:5: note: template<class _IntType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::negative_binomial_distribution<_IntType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:1372:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from radical1.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:1577:5: note: template<class _IntType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::poisson_distribution<_IntType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:1577:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from radical1.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:1845:5: note: template<class _IntType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::binomial_distribution<_IntType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:1845:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from radical1.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:2140:5: note: template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::lognormal_distribution<_RealType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:2140:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from radical1.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:2212:5: note: template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::chi_squared_distribution<_RealType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:2212:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from radical1.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:2377:5: note: template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::fisher_f_distribution<_RealType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:2377:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from radical1.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:2451:5: note: template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::student_t_distribution<_RealType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:2451:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from radical1.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:2913:5: note: template<class _IntType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::discrete_distribution<_IntType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:2913:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from radical1.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:3128:5: note: template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::piecewise_constant_distribution<_RealType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:3128:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from radical1.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:3344:5: note: template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::piecewise_linear_distribution<_RealType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:3344:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:65:0,
                 from radical1.cpp:1:
/usr/include/c++/4.8/bitset:1453:5: note: template<class _CharT, class _Traits, unsigned int _Nb> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::bitset<_Nb>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is, bitset<_Nb>& __x)
     ^
/usr/include/c++/4.8/bitset:1453:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:71:0,
                 from radical1.cpp:1:
/usr/include/c++/4.8/iomanip:68:5: note: template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::_Resetiosflags)
     operator>>(basic_istream<_CharT, _Traits>& __is, _Resetiosflags __f)
     ^
/usr/include/c++/4.8/iomanip:68:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:71:0,
                 from radical1.cpp:1:
/usr/include/c++/4.8/iomanip:98:5: note: template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::_Setiosflags)
     operator>>(basic_istream<_CharT, _Traits>& __is, _Setiosflags __f)
     ^
/usr/include/c++/4.8/iomanip:98:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:71:0,
                 from radical1.cpp:1:
/usr/include/c++/4.8/iomanip:129:5: note: template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::_Setbase)
     operator>>(basic_istream<_CharT, _Traits>& __is, _Setbase __f)
     ^
/usr/include/c++/4.8/iomanip:129:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:71:0,
                 from radical1.cpp:1:
/usr/include/c++/4.8/iomanip:167:5: note: template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::_Setfill<_CharT>)
     operator>>(basic_istream<_CharT, _Traits>& __is, _Setfill<_CharT> __f)
     ^
/usr/include/c++/4.8/iomanip:167:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:71:0,
                 from radical1.cpp:1:
/usr/include/c++/4.8/iomanip:197:5: note: template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::_Setprecision)
     operator>>(basic_istream<_CharT, _Traits>& __is, _Setprecision __f)
     ^
/usr/include/c++/4.8/iomanip:197:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:71:0,
                 from radical1.cpp:1:
/usr/include/c++/4.8/iomanip:227:5: note: template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::_Setw)
     operator>>(basic_istream<_CharT, _Traits>& __is, _Setw __f)
     ^
/usr/include/c++/4.8/iomanip:227:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:71:0,
                 from radical1.cpp:1:
/usr/include/c++/4.8/iomanip:261:5: note: template<class _CharT, class _Traits, class _MoneyT> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::_Get_money<_MoneyT>)
     operator>>(basic_istream<_CharT, _Traits>& __is, _Get_money<_MoneyT> __f)
     ^
/usr/include/c++/4.8/iomanip:261:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/valarray:587:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94,
                 from radical1.cpp:1:
/usr/include/c++/4.8/bits/valarray_after.h:411:5: note: template<class _Dom1, class _Dom2> std::_Expr<std::_BinClos<std::__shift_right, std::_Expr, std::_Expr, _Dom1, _Dom2>, typename std::__fun<std::__shift_right, typename _Dom1::value_type>::result_type> std::operator>>(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const std::_Expr<_Dom2, typename _Dom2::value_type>&)
     _DEFINE_EXPR_BINARY_OPERATOR(>>, __shift_right)
     ^
/usr/include/c++/4.8/bits/valarray_after.h:411:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/valarray:587:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94,
                 from radical1.cpp:1:
/usr/include/c++/4.8/bits/valarray_after.h:411:5: note: template<class _Dom> std::_Expr<std::_BinClos<std::__shift_right, std::_Expr, std::_Constant, _Dom, typename _Dom::value_type>, typename std::__fun<std::__shift_right, typename _Dom1::value_type>::result_type> std::operator>>(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const typename _Dom::value_type&)
     _DEFINE_EXPR_BINARY_OPERATOR(>>, __shift_right)
     ^
/usr/include/c++/4.8/bits/valarray_after.h:411:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/valarray:587:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94,
                 from radical1.cpp:1:
/usr/include/c++/4.8/bits/valarray_after.h:411:5: note: template<class _Dom> std::_Expr<std::_BinClos<std::__shift_right, std::_Constant, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__shift_right, typename _Dom1::value_type>::result_type> std::operator>>(const typename _Dom::value_type&, const std::_Expr<_Dom1, typename _Dom1::value_type>&)
     _DEFINE_EXPR_BINARY_OPERATOR(>>, __shift_right)
     ^
/usr/include/c++/4.8/bits/valarray_after.h:411:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   mismatched types 'const std::_Expr<_Dom1, typename _Dom1::value_type>' and 'double'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/valarray:587:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94,
                 from radical1.cpp:1:
/usr/include/c++/4.8/bits/valarray_after.h:411:5: note: template<class _Dom> std::_Expr<std::_BinClos<std::__shift_right, std::_Expr, std::_ValArray, _Dom, typename _Dom::value_type>, typename std::__fun<std::__shift_right, typename _Dom1::value_type>::result_type> std::operator>>(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const std::valarray<typename _Dom::value_type>&)
     _DEFINE_EXPR_BINARY_OPERATOR(>>, __shift_right)
     ^
/usr/include/c++/4.8/bits/valarray_after.h:411:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/c++/4.8/valarray:587:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94,
                 from radical1.cpp:1:
/usr/include/c++/4.8/bits/valarray_after.h:411:5: note: template<class _Dom> std::_Expr<std::_BinClos<std::__shift_right, std::_ValArray, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__shift_right, typename _Dom1::value_type>::result_type> std::operator>>(const std::valarray<typename _Dom::value_type>&, const std::_Expr<_Dom1, typename _Dom1::value_type>&)
     _DEFINE_EXPR_BINARY_OPERATOR(>>, __shift_right)
     ^
/usr/include/c++/4.8/bits/valarray_after.h:411:5: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'const std::valarray<typename _Dom::value_type>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94:0,
                 from radical1.cpp:1:
/usr/include/c++/4.8/valarray:1176:1: note: template<class _Tp> std::_Expr<std::_BinClos<std::__shift_right, std::_ValArray, std::_ValArray, _Tp, _Tp>, typename std::__fun<std::__shift_right, _Tp>::result_type> std::operator>>(const std::valarray<_Tp>&, const std::valarray<_Tp>&)
 _DEFINE_BINARY_OPERATOR(>>, __shift_right)
 ^
/usr/include/c++/4.8/valarray:1176:1: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'const std::valarray<_Tp>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94:0,
                 from radical1.cpp:1:
/usr/include/c++/4.8/valarray:1176:1: note: template<class _Tp> std::_Expr<std::_BinClos<std::__shift_right, std::_ValArray, std::_Constant, _Tp, _Tp>, typename std::__fun<std::__shift_right, _Tp>::result_type> std::operator>>(const std::valarray<_Tp>&, const _Tp&)
 _DEFINE_BINARY_OPERATOR(>>, __shift_right)
 ^
/usr/include/c++/4.8/valarray:1176:1: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'const std::valarray<_Tp>'
     cout >> sqrt (a);

                    ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94:0,
                 from radical1.cpp:1:
/usr/include/c++/4.8/valarray:1176:1: note: template<class _Tp> std::_Expr<std::_BinClos<std::__shift_right, std::_Constant, std::_ValArray, _Tp, _Tp>, typename std::__fun<std::__shift_right, _Tp>::result_type> std::operator>>(const _Tp&, const std::valarray<_Tp>&)
 _DEFINE_BINARY_OPERATOR(>>, __shift_right)
 ^
/usr/include/c++/4.8/valarray:1176:1: note:   template argument deduction/substitution failed:
radical1.cpp:7:20: note:   mismatched types 'const std::valarray<_Tp>' and 'double'
     cout >> sqrt (a);

                    ^
radical1.cpp:7:21: error: expected '}' at end of input
     cout >> sqrt (a);

                     ^

Cum funcționează evaluarea?