Borderou de evaluare (job #125690)

Compilare: user.c: In function ‘main’: user.c:6:33: warning: unused variable ‘d’ [-Wunused-variable] user.c:6:15: warning: unused variable ‘k’ [-Wunused-variable] user.c:4:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] user.c:5:12: 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]