foo.c: In function 'G':
foo.c:35:6: warning: variable 'f' set but not used [-Wunused-but-set-variable]
   35 |  int f;
      |      ^
foo.c: In function 'GetNumber':
foo.c:7:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
    7 |   scanf("%d",&arr[i]);
      |   ^~~~~~~~~~~~~~~~~~~
foo.c:10:4: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   10 |    scanf("%d",&arr[i]);
      |    ^~~~~~~~~~~~~~~~~~~
foo.c: In function 'main':
foo.c:56:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   56 |  scanf("%d",&b);
      |  ^~~~~~~~~~~~~~

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