Borderou de evaluare (job #50931)

Compilare: user.cpp: In function ‘int main()’: user.cpp:6:15: warning: unused variable ‘p’ [-Wunused-variable] user.cpp:6:25: warning: unused variable ‘r’ [-Wunused-variable] user.cpp:4:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:5:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:7:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]