Detalii evaluare #49506788

Rezumat problemă

Să se scrie un program care citește numărul natural n și determină suma S=1*2+2*3+3*4...+n*(n+1).

Detalii

Problema Expresie2 Operații I/O tastatură/ecran
Limita timp 0.1 secunde Limita memorie Total: 64 MB / Stivă 8 MB
Id soluție #49506788 Utilizator Rusu Renata (ReneRusu)
Fișier expresie2.cpp Dimensiune 166 B
Data încărcării 05 Martie 2024, 09:04 Scor / rezultat Eroare de compilare

Evaluare


Mesaj compilare

expresie2.cpp: In function 'int main()':
expresie2.cpp:9:29: error: no match for 'operator>>' (operand types are 'std::basic_ostream<char>' and 'int')
     cout<<"Rezultatul este ">>s;

                             ^
expresie2.cpp:9:29: 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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from expresie2.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:
expresie2.cpp:9:31: note:   'std::basic_ostream<char>' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout<<"Rezultatul este ">>s;

                               ^
In file included from /usr/include/c++/4.8/istream:882:0,
                 from /usr/include/c++/4.8/iostream:40,
                 from expresie2.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:
expresie2.cpp:9:31: note:   'std::basic_ostream<char>' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout<<"Rezultatul este ">>s;

                               ^
In file included from /usr/include/c++/4.8/istream:882:0,
                 from /usr/include/c++/4.8/iostream:40,
                 from expresie2.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:
expresie2.cpp:9:31: note:   'std::basic_ostream<char>' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout<<"Rezultatul este ">>s;

                               ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from expresie2.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:
expresie2.cpp:9:31: note:   'std::basic_ostream<char>' is not derived from 'std::basic_istream<char, _Traits>'
     cout<<"Rezultatul este ">>s;

                               ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from expresie2.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:
expresie2.cpp:9:31: note:   'std::basic_ostream<char>' is not derived from 'std::basic_istream<char, _Traits>'
     cout<<"Rezultatul este ">>s;

                               ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from expresie2.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:
expresie2.cpp:9:31: note:   'std::basic_ostream<char>' is not derived from 'std::basic_istream<char, _Traits>'
     cout<<"Rezultatul este ">>s;

                               ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from expresie2.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:
expresie2.cpp:9:31: note:   'std::basic_ostream<char>' is not derived from 'std::basic_istream<char, _Traits>'
     cout<<"Rezultatul este ">>s;

                               ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from expresie2.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:
expresie2.cpp:9:31: note:   'std::basic_ostream<char>' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout<<"Rezultatul este ">>s;

                               ^

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 Expresie2 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.