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	#62917755	Utilizator	Tit G. Darrin (Tit_Darrin)
Fișier	af.cpp	Dimensiune	714 B
Data încărcării	06 Februarie 2026, 11:14	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

af.cpp:3:1: error: 'ifstream' does not name a type
 ifstream cin("af.in")

 ^
af.cpp: In function 'int main()':
af.cpp:11:5: error: 'cin' was not declared in this scope
     cin>>n;

     ^
af.cpp:11:5: note: suggested alternative:
In file included from af.cpp:1:0:
/usr/include/c++/4.8/iostream:60:18: note:   'std::cin'
   extern istream cin;  /// Linked to standard input
                  ^
af.cpp:17:45: error: 'cout' was not declared in this scope
                 case '+':{if(nr3==nr1 + nr2)cout<<"Adevarat\n";else cout<<"Fals\n";break;}

                                             ^
af.cpp:17:45: note: suggested alternative:
In file included from af.cpp:1:0:
/usr/include/c++/4.8/iostream:61:18: note:   'std::cout'
   extern ostream cout;  /// Linked to standard output
                  ^
af.cpp:17:69: error: 'cout' was not declared in this scope
                 case '+':{if(nr3==nr1 + nr2)cout<<"Adevarat\n";else cout<<"Fals\n";break;}

                                                                     ^
af.cpp:17:69: note: suggested alternative:
In file included from af.cpp:1:0:
/usr/include/c++/4.8/iostream:61:18: note:   'std::cout'
   extern ostream cout;  /// Linked to standard output
                  ^
af.cpp:18:53: error: 'cout' was not declared in this scope
                 case ':':{if(nr2!=0&&nr3==nr1 / nr2)cout<<"Adevarat\n";else cout<<"Fals\n";break;}

                                                     ^
af.cpp:18:53: note: suggested alternative:
In file included from af.cpp:1:0:
/usr/include/c++/4.8/iostream:61:18: note:   'std::cout'
   extern ostream cout;  /// Linked to standard output
                  ^
af.cpp:18:77: error: 'cout' was not declared in this scope
                 case ':':{if(nr2!=0&&nr3==nr1 / nr2)cout<<"Adevarat\n";else cout<<"Fals\n";break;}

                                                                             ^
af.cpp:18:77: note: suggested alternative:
In file included from af.cpp:1:0:
/usr/include/c++/4.8/iostream:61:18: note:   'std::cout'
   extern ostream cout;  /// Linked to standard output
                  ^
af.cpp:19:45: error: 'cout' was not declared in this scope
                 case 'x':{if(nr3==nr1 * nr2)cout<<"Adevarat\n";else cout<<"Fals\n";break;}

                                             ^
af.cpp:19:45: note: suggested alternative:
In file included from af.cpp:1:0:
/usr/include/c++/4.8/iostream:61:18: note:   'std::cout'
   extern ostream cout;  /// Linked to standard output
                  ^
af.cpp:19:69: error: 'cout' was not declared in this scope
                 case 'x':{if(nr3==nr1 * nr2)cout<<"Adevarat\n";else cout<<"Fals\n";break;}

                                                                     ^
af.cpp:19:69: note: suggested alternative:
In file included from af.cpp:1:0:
/usr/include/c++/4.8/iostream:61:18: note:   'std::cout'
   extern ostream cout;  /// Linked to standard output
                  ^
af.cpp:20:45: error: 'cout' was not declared in this scope
                 case '-':{if(nr3==nr1 - nr2)cout<<"Adevarat\n";else cout<<"Fals\n";break;}

                                             ^
af.cpp:20:45: note: suggested alternative:
In file included from af.cpp:1:0:
/usr/include/c++/4.8/iostream:61:18: note:   'std::cout'
   extern ostream cout;  /// Linked to standard output
                  ^
af.cpp:20:69: error: 'cout' was not declared in this scope
                 case '-':{if(nr3==nr1 - nr2)cout<<"Adevarat\n";else cout<<"Fals\n";break;}

                                                                     ^
af.cpp:20:69: note: suggested alternative:
In file included from af.cpp:1:0:
/usr/include/c++/4.8/iostream:61:18: note:   'std::cout'
   extern ostream cout;  /// Linked to standard output
                  ^

Cum funcționează evaluarea?