foo.c: In function 'PrimeCount':
foo.c:21:10: warning: unused variable 'k' [-Wunused-variable]
   21 |  int i,x,k;int count=0;
      |          ^
foo.c: In function 'main':
foo.c:7:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
    7 |  scanf("%d",&n1);scanf("%d",&n2);
      |  ^~~~~~~~~~~~~~~
foo.c:7:18: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
    7 |  scanf("%d",&n1);scanf("%d",&n2);
      |                  ^~~~~~~~~~~~~~~
foo.c:10:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   10 |   scanf("%d",&a[i]);
      |   ^~~~~~~~~~~~~~~~~
foo.c:14:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   14 |   scanf("%d",&b[i]);
      |   ^~~~~~~~~~~~~~~~~

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