foo.c: In function 'main':
foo.c:6:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
6 | scanf("%d",&n1);
| ^~~~~~~~~~~~~~~
foo.c:7:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
7 | 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[j]);
| ^~~~~~~~~~~~~~~~~
foo.c: In function 'PrimeCount':
foo.c:47:1: warning: control reaches end of non-void function [-Wreturn-type]
47 | }
| ^
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