Compilare: user.c: In function ‘main’: user.c:4:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("aprindere.in","r",stdin),freopen("aprindere.out","w",stdout),scanf("%d%d",&n,&m); ^ user.c:4:46: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("aprindere.in","r",stdin),freopen("aprindere.out","w",stdout),scanf("%d%d",&n,&m); ^ user.c:4:80: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] freopen("aprindere.in","r",stdin),freopen("aprindere.out","w",stdout),scanf("%d%d",&n,&m); ^ user.c:6:14: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",a+i); ^ user.c:8:14: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",c+j,t+j,b+j); ^ user.c:10:18: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&d[j][i]); ^