foo.c: In function 'main':
foo.c:17:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   17 |   scanf("%d %d",&n1,&n2);
      |   ^~~~~~~~~~~~~~~~~~~~~~
foo.c:19:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   19 |   scanf("%d",&a[i]);
      |   ^~~~~~~~~~~~~~~~~
foo.c:21:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   21 |   scanf("%d",&b[i]);
      |   ^~~~~~~~~~~~~~~~~
foo.c: In function 'PrimeCount':
foo.c:10:6: warning: 'j' may be used uninitialized in this function [-Wmaybe-uninitialized]
   10 |    if(j==c[i])
      |      ^

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