Borderou de evaluare (job #121697)

Compilare: user.cpp: In function ‘int main()’: user.cpp:10:20: warning: variable ‘ok’ set but not used [-Wunused-but-set-variable] user.cpp:8:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:9:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:36:35: warning: ‘nr’ may be used uninitialized in this function [-Wuninitialized]