Compilare: user.c: In function ‘main’: user.c:5:9: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("parantezare.in","r",stdin),freopen("parantezare.out","w",stdout),fgets(s,100005,stdin),scanf("%d",&m); ^ user.c:5:45: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("parantezare.in","r",stdin),freopen("parantezare.out","w",stdout),fgets(s,100005,stdin),scanf("%d",&m); ^ user.c:5:81: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result] freopen("parantezare.in","r",stdin),freopen("parantezare.out","w",stdout),fgets(s,100005,stdin),scanf("%d",&m); ^ user.c:5:103: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] freopen("parantezare.in","r",stdin),freopen("parantezare.out","w",stdout),fgets(s,100005,stdin),scanf("%d",&m); ^ user.c:12:13: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&j),printf("%d ",r[j]); ^