Borderou de evaluare (job #421421)

Compilare: user.cpp: In function ‘int main()’: user.cpp:19:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:34:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:36:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:9:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:10:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result]