Borderou de evaluare (job #219082)

Compilare: user.cpp: In function ‘int main()’: user.cpp:5:29: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:6:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:7:26: warning: ‘pa’ may be used uninitialized in this function [-Wuninitialized] user.cpp:7:29: warning: ‘pb’ may be used uninitialized in this function [-Wuninitialized]