Borderou de evaluare (job #541100)

Compilare: user.cpp: In function ‘int main()’: user.cpp:8:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:9:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:30:44: warning: ‘y’ may be used uninitialized in this function [-Wuninitialized] user.cpp:30:32: warning: ‘x’ may be used uninitialized in this function [-Wuninitialized]