Borderou de evaluare (job #161572)

Compilare: user.cpp: In function ‘int main()’: user.cpp:17:10: warning: statement has no effect [-Wunused-value] user.cpp:10:10: warning: unused variable ‘ok’ [-Wunused-variable] user.cpp:7:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:8:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:11:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]