Compilare: user.c: In function ‘main’: user.c:5:28: warning: unused variable ‘y’ [-Wunused-variable] long long a,b,i,nc,c,x,p,y; ^ user.c:8:3: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%lld%lld%lld",&a,&b,&nc); ^ user.c:10:5: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%lld%lld",&c,&x); ^