Eroare de compilare: user.cpp: In function ‘bool cmp(const char*, const char*)’: user.cpp:12: error: ‘strcmp’ was not declared in this scope user.cpp: In function ‘int main()’: user.cpp:16: error: ‘stdin’ was not declared in this scope user.cpp:16: error: ‘freopen’ was not declared in this scope user.cpp:18: error: ‘scanf’ was not declared in this scope user.cpp:21: error: ‘fgets’ was not declared in this scope user.cpp:21: error: ‘strlen’ was not declared in this scope user.cpp:27: error: ‘strlen’ was not declared in this scope user.cpp:34: error: ‘fopen’ was not declared in this scope user.cpp:34: error: ‘fprintf’ was not declared in this scope