Detalii evaluare: ~51796138

Detalii evaluare #51796138

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Rezumat problemă

`#2641` AF

Gigel are ca temă la matematică să precizeze valoarea de adevăr a unor expresii de forma nr1 semn nr2 = nr3, unde nr1, nr2 și nr3 sunt numere naturale, iar semn poate fi +, -, x sau : reprezintând adunarea, scăderea, înmulțirea și împărțirea. Ajutați-l pe Gigel să rezolve tema la matematică.

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Doru Floare (Doruletz)
Doru Floare
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Detalii

Problema	AF	Operații I/O	`af.in`/`af.out`
Limita timp	1 secunde	Limita memorie	Total: `64 MB` / Stivă `8 MB`
Id soluție	`#51796138`	Utilizator	Balan-Tribus Tudor (tbtribus)
Fișier	af.cpp	Dimensiune	872 B
Data încărcării	21 August 2024, 11:16	Scor / rezultat	Eroare de compilare

Evaluare

Mesaj compilare

af.cpp: In function 'int main()':
af.cpp:12:13: error: no match for 'operator<<' (operand types are 'std::istream {aka std::basic_istream<char>}' and 'long long int')
         cin << nr1 << semn >> nr2 >> egal >> nr3;

             ^
af.cpp:12:13: note: candidates are:
In file included from /usr/include/c++/4.8/string:52:0,
                 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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from af.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2753:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::basic_string<_CharT, _Traits, _Alloc>&)
     operator<<(basic_ostream<_CharT, _Traits>& __os,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2753:5: note:   template argument deduction/substitution failed:
af.cpp:12:16: note:   'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
         cin << nr1 << semn >> nr2 >> egal >> nr3;

                ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from af.cpp:1:
/usr/include/c++/4.8/ostream:471:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, _CharT)
     operator<<(basic_ostream<_CharT, _Traits>& __out, _CharT __c)
     ^
/usr/include/c++/4.8/ostream:471:5: note:   template argument deduction/substitution failed:
af.cpp:12:16: note:   'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
         cin << nr1 << semn >> nr2 >> egal >> nr3;

                ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from af.cpp:1:
/usr/include/c++/4.8/ostream:476:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, char)
     operator<<(basic_ostream<_CharT, _Traits>& __out, char __c)
     ^
/usr/include/c++/4.8/ostream:476:5: note:   template argument deduction/substitution failed:
af.cpp:12:16: note:   'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
         cin << nr1 << semn >> nr2 >> egal >> nr3;

                ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from af.cpp:1:
/usr/include/c++/4.8/ostream:482:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, char)
     operator<<(basic_ostream<char, _Traits>& __out, char __c)
     ^
/usr/include/c++/4.8/ostream:482:5: note:   template argument deduction/substitution failed:
af.cpp:12:16: note:   'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
         cin << nr1 << semn >> nr2 >> egal >> nr3;

                ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from af.cpp:1:
/usr/include/c++/4.8/ostream:488:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, signed char)
     operator<<(basic_ostream<char, _Traits>& __out, signed char __c)
     ^
/usr/include/c++/4.8/ostream:488:5: note:   template argument deduction/substitution failed:
af.cpp:12:16: note:   'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
         cin << nr1 << semn >> nr2 >> egal >> nr3;

                ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from af.cpp:1:
/usr/include/c++/4.8/ostream:493:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, unsigned char)
     operator<<(basic_ostream<char, _Traits>& __out, unsigned char __c)
     ^
/usr/include/c++/4.8/ostream:493:5: note:   template argument deduction/substitution failed:
af.cpp:12:16: note:   'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
         cin << nr1 << semn >> nr2 >> egal >> nr3;

                ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from af.cpp:1:
/usr/include/c++/4.8/ostream:513:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const _CharT*)
     operator<<(basic_ostream<_CharT, _Traits>& __out, const _CharT* __s)
     ^
/usr/include/c++/4.8/ostream:513:5: note:   template argument deduction/substitution failed:
af.cpp:12:16: note:   'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
         cin << nr1 << semn >> nr2 >> egal >> nr3;

                ^
In file included from /usr/include/c++/4.8/ostream:612:0,
                 from /usr/include/c++/4.8/iostream:39,
                 from af.cpp:1:
/usr/include/c++/4.8/bits/ostream.tcc:321:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const char*)
     operator<<(basic_ostream<_CharT, _Traits>& __out, const char* __s)
     ^
/usr/include/c++/4.8/bits/ostream.tcc:321:5: note:   template argument deduction/substitution failed:
af.cpp:12:16: note:   'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
         cin << nr1 << semn >> nr2 >> egal >> nr3;

                ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from af.cpp:1:
/usr/include/c++/4.8/ostream:530:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, const char*)
     operator<<(basic_ostream<char, _Traits>& __out, const char* __s)
     ^
/usr/include/c++/4.8/ostream:530:5: note:   template argument deduction/substitution failed:
af.cpp:12:16: note:   'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
         cin << nr1 << semn >> nr2 >> egal >> nr3;

                ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from af.cpp:1:
/usr/include/c++/4.8/ostream:543:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, const signed char*)
     operator<<(basic_ostream<char, _Traits>& __out, const signed char* __s)
     ^
/usr/include/c++/4.8/ostream:543:5: note:   template argument deduction/substitution failed:
af.cpp:12:16: note:   'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
         cin << nr1 << semn >> nr2 >> egal >> nr3;

                ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from af.cpp:1:
/usr/include/c++/4.8/ostream:548:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, const unsigned char*)
     operator<<(basic_ostream<char, _Traits>& __out, const unsigned char* __s)
     ^
/usr/include/c++/4.8/ostream:548:5: note:   template argument deduction/substitution failed:
af.cpp:12:16: note:   'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
         cin << nr1 << semn >> nr2 >> egal >> nr3;

                ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from af.cpp:1:
/usr/include/c++/4.8/ostream:602:5: note: template<class _CharT, class _Traits, class _Tp> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&&, const _Tp&)
     operator<<(basic_ostream<_CharT, _Traits>&& __os, const _Tp& __x)
     ^
/usr/include/c++/4.8/ostream:602:5: note:   template argument deduction/substitution failed:
af.cpp:12:16: note:   'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
         cin << nr1 << semn >> nr2 >> egal >> nr3;

                ^
af.cpp:13:12: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses]
         if (semn=='+')

            ^
af.cpp:18:12: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses]
         if (semn=='-')

            ^
af.cpp:23:12: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses]
         if (semn=='x')

            ^
af.cpp:28:12: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses]
         if (semn==':')

            ^

Cum funcționează evaluarea?

www.pbinfo.ro permite evaluarea a două tipuri de probleme:

probleme la care rezolvarea presupune scrierea unui program complet
probleme la care rezolvarea presupune scrierea unei secvențe de program - câteva instrucțiuni, o listă de declarații, una sau mai multe funcții, etc.

Problema AF face parte din prima categorie. Soluția propusă de tine va fi evaluată astfel:

Programul sursă este compilat folosind compilatorul corespunzător. Dacă în urma compilării se obțin erori sau avertismente, acestea sunt afișate în această pagină.
Dacă programul a fost compilat, executabilul obținut va fi rulat, furnizându-i-se unul sau mai multe seturi de date de intrare, în concordanță cu restricțiile specifice problemei. Pentru fiecare set de date se obține un anumit punctaj, în raport cu corectitudinea soluției tale.

Suma punctajelor acordate pe testele utilizate pentru verificare este 100. Astfel, soluția ta poate obține cel mult 100 de puncte, caz în care se poate considera corectă.