foo.c: In function 'main':
foo.c:8:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
    8 |     scanf("%d",&q);getchar();
      |     ^~~~~~~~~~~~~~
foo.c:12:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   12 |         scanf("%s", s1);
      |         ^~~~~~~~~~~~~~~
foo.c:13:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   13 |         scanf("%s", s2);
      |         ^~~~~~~~~~~~~~~

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