Compilare: main.c: In function 'main': main.c:6:17: warning: unused variable 'b' [-Wunused-variable] int n,x,y,i,a,b,d,p,iprim,j; ^ main.c:6:15: warning: unused variable 'a' [-Wunused-variable] int n,x,y,i,a,b,d,p,iprim,j; ^ main.c:9:3: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&n); ^~~~~~~~~~~~~~~~~~~ main.c:23:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&x,&y); ^~~~~~~~~~~~~~~~~~~~~~~~