Borderou de evaluare (job #284186)

Compilare: user.cpp: In function 'int main()': user.cpp:9:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:10:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:13:10: warning: 'a' is used uninitialized in this function [-Wuninitialized] user.cpp:13:10: warning: 'b' is used uninitialized in this function [-Wuninitialized] user.cpp:14:10: warning: 'd' is used uninitialized in this function [-Wuninitialized] user.cpp:15:5: warning: 'z' is used uninitialized in this function [-Wuninitialized]