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),gets(s),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),gets(s),scanf("%d",&m); ^ user.c:5:80: warning: ignoring return value of ‘gets’, declared with attribute warn_unused_result [-Wunused-result] freopen("parantezare.in","r",stdin),freopen("parantezare.out","w",stdout),gets(s),scanf("%d",&m); ^ user.c:5:89: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] freopen("parantezare.in","r",stdin),freopen("parantezare.out","w",stdout),gets(s),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]); ^ /tmp/cczae6x6.o: In function `main': user.c:(.text.startup+0x53): warning: the `gets' function is dangerous and should not be used.