Borderou de evaluare (job #444477)

Compilare: user.cpp: In function ‘int main()’: user.cpp:50:18: warning: overflow in implicit constant conversion [-Woverflow] user.cpp:10:50: warning: unused variable ‘x’ [-Wunused-variable] user.cpp:8:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:9:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:29:16: warning: ‘f’ may be used uninitialized in this function [-Wuninitialized]