Borderou de evaluare (job #469119)

Compilare: user.cpp: In function ‘int main()’: user.cpp:6:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:7:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:30:21: warning: ‘z’ may be used uninitialized in this function [-Wuninitialized] user.cpp:30:21: warning: ‘y’ may be used uninitialized in this function [-Wuninitialized] user.cpp:30:21: warning: ‘x’ may be used uninitialized in this function [-Wuninitialized]