Borderou de evaluare (job #183642)

Compilare: user.cpp: In function ‘int main()’: user.cpp:6:30: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:7:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:19:7: warning: ‘y’ may be used uninitialized in this function [-Wuninitialized] user.cpp:23:5: warning: ‘x’ may be used uninitialized in this function [-Wuninitialized]