Eroare de compilare: user.cpp:1:20: error: stdio.h: No such file or directory user.cpp: In function ‘int main()’: user.cpp:10: error: ‘stdin’ was not declared in this scope user.cpp:10: error: ‘freopen’ was not declared in this scope user.cpp:11: error: ‘stdout’ was not declared in this scope user.cpp:12: error: ‘scanf’ was not declared in this scope user.cpp:14: warning: comparison between signed and unsigned integer expressions user.cpp:22: error: ‘printf’ was not declared in this scope