Borderou de evaluare (job #294150)

Compilare: user.c: In function 'main': user.c:25:15: warning: unused variable 'nr' [-Wunused-variable] user.c:25:13: warning: unused variable 'b' [-Wunused-variable] user.c:23:12: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] user.c:24:12: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] user.c:27:10: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] user.c:29:14: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]