Borderou de evaluare (job #50875)

Compilare: user.cpp: In function ‘int main()’: user.cpp:46:13: warning: variable ‘num’ set but not used [-Wunused-but-set-variable] user.cpp:46:21: warning: unused variable ‘k’ [-Wunused-variable] user.cpp:44:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:45:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:47:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:51:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]