Borderou de evaluare (job #287714)

Compilare: user.cpp: In function 'int main()': user.cpp:17:9: warning: unused variable 'n' [-Wunused-variable] user.cpp:51:9: warning: unused variable 'r' [-Wunused-variable] user.cpp:15:32: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:16:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:19:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]