Borderou de evaluare (job #52331)

Compilare: user.cpp: In function ‘int main()’: user.cpp:8:36: 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:41:12: warning: ‘s’ may be used uninitialized in this function [-Wuninitialized] user.cpp:27:11: warning: ‘w’ may be used uninitialized in this function [-Wuninitialized]