Eroare de compilare: user.cpp:1:19: error: stdio.h.: No such file or directory user.cpp: In function ‘int main()’: user.cpp:56: error: ‘stdin’ was not declared in this scope user.cpp:56: error: ‘freopen’ was not declared in this scope user.cpp:57: error: ‘stdout’ was not declared in this scope user.cpp:59: error: ‘scanf’ was not declared in this scope user.cpp:65: error: ‘printf’ was not declared in this scope user.cpp:66: error: ‘printf’ was not declared in this scope