Borderou de evaluare (job #4296)

Compilare: user.c: In function ‘main’: user.c:6:11: warning: unused variable ‘nr’ [-Wunused-variable] user.c:4:8: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] user.c:5:8: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] user.c:8:6: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] user.c:11:14: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] user.c:12:6: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] user.c:14:11: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]