Rezumat problemă

AF

#2641

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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Fișiere Doru Floare (Doruletz) Doru Floare ușoară

Clasa 9 Elemente de baza ale limbajului Structuri repetitive Calculul unor expresii

Rezolvă

Detalii

Problema	AF	Operații I/O	af.in/af.out
Limita timp	1 secunde	Limita memorie	Total: 64 MB / Stivă 8 MB
Id soluție	#64531911	Utilizator	Talmaciu Matei (mateitalmaciu)
Fișier	af.cpp	Dimensiune	1012 B
Data încărcării	12 Mai 2026, 19:39	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

af.cpp: In function ‘int main()’:
af.cpp:12:5: error: reference to ‘cin’ is ambiguous
   12 |     cin >> n;
      |     ^~~
In file included from af.cpp:1:
/usr/include/c++/13/iostream:62:18: note: candidates are: ‘std::istream std::cin’
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
af.cpp:6:10: note:                 ‘std::ifstream cin’
    6 | ifstream cin("af.in");
      |          ^~~
af.cpp:17:9: error: reference to ‘cin’ is ambiguous
   17 |         cin >> x >> c1 >> y >> c2 >> z;
      |         ^~~
/usr/include/c++/13/iostream:62:18: note: candidates are: ‘std::istream std::cin’
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
af.cpp:6:10: note:                 ‘std::ifstream cin’
    6 | ifstream cin("af.in");
      |          ^~~
af.cpp:20:17: error: reference to ‘cout’ is ambiguous
   20 |                 cout << "Adevarat" << endl;
      |                 ^~~~
/usr/include/c++/13/iostream:63:18: note: candidates are: ‘std::ostream std::cout’
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
af.cpp:7:10: note:                 ‘std::ofstream cout’
    7 | ofstream cout("af.out");
      |          ^~~~
af.cpp:22:17: error: reference to ‘cout’ is ambiguous
   22 |                 cout << "Fals" << endl;
      |                 ^~~~
/usr/include/c++/13/iostream:63:18: note: candidates are: ‘std::ostream std::cout’
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
af.cpp:7:10: note:                 ‘std::ofstream cout’
    7 | ofstream cout("af.out");
      |          ^~~~
af.cpp:18:11: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wdangling-else]
   18 |         if(c1=='+')
      |           ^
af.cpp:25:17: error: reference to ‘cout’ is ambiguous
   25 |                 cout << "Adevarat" << endl;
      |                 ^~~~
/usr/include/c++/13/iostream:63:18: note: candidates are: ‘std::ostream std::cout’
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
af.cpp:7:10: note:                 ‘std::ofstream cout’
    7 | ofstream cout("af.out");
      |          ^~~~
af.cpp:27:17: error: reference to ‘cout’ is ambiguous
   27 |                 cout << "Fals" << endl;
      |                 ^~~~
/usr/include/c++/13/iostream:63:18: note: candidates are: ‘std::ostream std::cout’
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
af.cpp:7:10: note:                 ‘std::ofstream cout’
    7 | ofstream cout("af.out");
      |          ^~~~
af.cpp:23:11: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wdangling-else]
   23 |         if(c1=='-')
      |           ^
af.cpp:30:17: error: reference to ‘cout’ is ambiguous
   30 |                 cout << "Adevarat" << endl;
      |                 ^~~~
/usr/include/c++/13/iostream:63:18: note: candidates are: ‘std::ostream std::cout’
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
af.cpp:7:10: note:                 ‘std::ofstream cout’
    7 | ofstream cout("af.out");
      |          ^~~~
af.cpp:32:17: error: reference to ‘cout’ is ambiguous
   32 |                 cout << "Fals" << endl;
      |                 ^~~~
/usr/include/c++/13/iostream:63:18: note: candidates are: ‘std::ostream std::cout’
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
af.cpp:7:10: note:                 ‘std::ofstream cout’
    7 | ofstream cout("af.out");
      |          ^~~~
af.cpp:28:11: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wdangling-else]
   28 |         if(c1=='x')
      |           ^
af.cpp:35:17: error: reference to ‘cout’ is ambiguous
   35 |                 cout << "Adevarat" << endl;
      |                 ^~~~
/usr/include/c++/13/iostream:63:18: note: candidates are: ‘std::ostream std::cout’
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
af.cpp:7:10: note:                 ‘std::ofstream cout’
    7 | ofstream cout("af.out");
      |          ^~~~
af.cpp:37:17: error: reference to ‘cout’ is ambiguous
   37 |                 cout << "Fals" << endl;
      |                 ^~~~
/usr/include/c++/13/iostream:63:18: note: candidates are: ‘std::ostream std::cout’
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
af.cpp:7:10: note:                 ‘std::ofstream cout’
    7 | ofstream cout("af.out");
      |          ^~~~
af.cpp:39:17: error: reference to ‘cout’ is ambiguous
   39 |                 cout << "Fals" << endl;
      |                 ^~~~
/usr/include/c++/13/iostream:63:18: note: candidates are: ‘std::ostream std::cout’
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
af.cpp:7:10: note:                 ‘std::ofstream cout’
    7 | ofstream cout("af.out");
      |          ^~~~

Cum funcționează evaluarea?