Borderou de evaluare (job #53217)

Compilare: user.cpp: In function ‘int main()’: user.cpp:8:5: warning: unused variable ‘r’ [-Wunused-variable] user.cpp:8:14: warning: variable ‘c’ set but not used [-Wunused-but-set-variable] user.cpp:6:30: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:7:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:9:15: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]