Borderou de evaluare (job #191470)

Compilare: user.cpp: In function ‘int main()’: user.cpp:34:12: warning: unused variable ‘j’ [-Wunused-variable] user.cpp:35:10: warning: variable ‘once’ set but not used [-Wunused-but-set-variable] user.cpp:36:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:37:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:38:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:41:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]