foo.c: In function 'search':
foo.c:20:2: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   20 |  if (x==0)
      |  ^~
foo.c:22:3: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   22 |   printf("\n");
      |   ^~~~~~
foo.c: In function 'input':
foo.c:6:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
    6 |   scanf("%d", &a[i]);
      |   ^~~~~~~~~~~~~~~~~~
foo.c: In function 'search':
foo.c:13:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   13 |  scanf("%d",&z);
      |  ^~~~~~~~~~~~~~
foo.c: In function 'main':
foo.c:29:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   29 |  scanf("%d",&n);
      |  ^~~~~~~~~~~~~~

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