Borderou de evaluare (job #29214)

Compilare: user.cpp: In function 'int main()': user.cpp:6:25: warning: unused variable 'p' [-Wunused-variable] user.cpp:4:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:5:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:7:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:12:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:21:1: warning: 'z' may be used uninitialized in this function [-Wuninitialized] user.cpp:13:1: warning: 'a' may be used uninitialized in this function [-Wuninitialized]