Borderou de evaluare (job #415031)

Compilare: user.cpp: In function ‘int main()’: user.cpp:7:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:8:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:52:32: warning: ‘st’ may be used uninitialized in this function [-Wuninitialized] user.cpp:46:20: warning: ‘f’ may be used uninitialized in this function [-Wuninitialized] user.cpp:20:9: warning: ‘ok’ may be used uninitialized in this function [-Wuninitialized]