Borderou de evaluare (job #418398)

Compilare: user.cpp: In function ‘int main()’: user.cpp:15:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:21:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:37:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:7:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:8:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result]