Compilare: user.c: In function ‘main’: user.c:5:21: warning: unused variable ‘j’ [-Wunused-variable] int i,x,k,n,m,q,j,a,b; ^ user.c:5:19: warning: unused variable ‘q’ [-Wunused-variable] int i,x,k,n,m,q,j,a,b; ^ user.c:5:11: warning: unused variable ‘x’ [-Wunused-variable] int i,x,k,n,m,q,j,a,b; ^ user.c:7:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&n); ^ user.c:9:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&v[i]); ^ user.c:10:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&k); ^ user.c:13:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&a,&b); ^