Borderou de evaluare (job #399739)

Compilare: user.cpp: In function ‘int main()’: user.cpp:24:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:26:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:28:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:39:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:41:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:52:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:54:25: 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] user.cpp:11:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:13:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:14:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:17:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]