Borderou de evaluare (job #212962)

Compilare: user.cpp: In function ‘int main()’: user.cpp:8:25: warning: unused variable ‘r’ [-Wunused-variable] user.cpp:8:29: warning: unused variable ‘e’ [-Wunused-variable] user.cpp:6:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:7:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result]