Borderou de evaluare (job #192814)

Compilare: user.c: In function ‘main’: user.c:22:15: warning: unused variable ‘nr’ [-Wunused-variable] user.c:22:13: warning: unused variable ‘b’ [-Wunused-variable] user.c:20:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] user.c:21:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] user.c:24:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] user.c:26:14: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]