Borderou de evaluare (job #230389)

Compilare: user.cpp: In function ‘int main()’: user.cpp:18:10: warning: unused variable ‘s’ [-Wunused-variable] user.cpp:19:15: warning: unused variable ‘y’ [-Wunused-variable] user.cpp:19:17: warning: unused variable ‘r’ [-Wunused-variable] user.cpp:21:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:22:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:23:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:37:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]