Borderou de evaluare (job #311019)

Compilare: user.cpp: In function ‘int main()’: user.cpp:30:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:35:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:41:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:44:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:10:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:11:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:14:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:20:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]