Borderou de evaluare (job #28699)

Compilare: user.cpp: In function ‘int main()’: user.cpp:15:24: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] user.cpp:6:24: warning: variable ‘z’ set but not used [-Wunused-but-set-variable] user.cpp:4:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:5:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:8:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:12:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]