Borderou de evaluare (job #289830)

Compilare: user.cpp: In function 'int main()': user.cpp:8:29: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:9:31: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:58:9: warning: 'semn' may be used uninitialized in this function [-Wuninitialized] user.cpp:56:13: warning: 's1' may be used uninitialized in this function [-Wuninitialized]