Borderou de evaluare (job #502641)

Compilare: user.cpp: In function 'int main()': user.cpp:13:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:15:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:18:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:10:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:11:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:12:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]