Borderou de evaluare (job #58922)

Compilare: user.cpp: In function ‘int main()’: user.cpp:9:16: warning: unused variable ‘si’ [-Wunused-variable] user.cpp:9:19: warning: unused variable ‘pi’ [-Wunused-variable] user.cpp:9:22: warning: unused variable ‘i’ [-Wunused-variable] user.cpp:7:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:8:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result]