Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:118: error: ‘stdin’ was not declared in this scope user.cpp:118: error: ‘freopen’ was not declared in this scope user.cpp:119: error: ‘stdout’ was not declared in this scope user.cpp:120: error: ‘scanf’ was not declared in this scope user.cpp:144: error: ‘printf’ was not declared in this scope