foo.c: In function 'primecount':
foo.c:24:8: warning: unused variable 'x' [-Wunused-variable]
24 | int i,x,m=0,j,flag;
| ^
foo.c: In function 'main':
foo.c:6:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
6 | scanf("%d%d",&n1,&n2);
| ^~~~~~~~~~~~~~~~~~~~~
foo.c:11:6: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
11 | scanf("%d",&a[i]);
| ^~~~~~~~~~~~~~~~~
foo.c:15:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
15 | scanf("%d",&b[j]);
| ^~~~~~~~~~~~~~~~~
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