Borderou de evaluare (job #363498)

Compilare: user.cpp: In function ‘int main()’: user.cpp:24:17: warning: unused variable ‘s’ [-Wunused-variable] user.cpp:24:21: warning: unused variable ‘st’ [-Wunused-variable] user.cpp:24:24: warning: unused variable ‘dr’ [-Wunused-variable] user.cpp:20:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:21:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result]