Compilare: user.c: In function ‘main’: user.c:30:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d",&n,&k); ^ user.c:33:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d",&v[i]); ^ user.c: In function ‘check’: user.c:12:10: warning: ‘s’ may be used uninitialized in this function [-Wmaybe-uninitialized] s+=v[i]; ^ user.c: In function ‘main’: user.c:12:10: warning: ‘s’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.c:9:11: note: ‘s’ was declared here int i,s,c=1; ^