foo.c: In function 'FindMax':
foo.c:8:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&a[j]);
  ^~~~~~~~~~~~~~~~~
foo.c: In function 'main':
foo.c:23:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
  ^~~~~~~~~~~~~~
foo.c: In function 'FindMax':
foo.c:16:9: warning: 't' may be used uninitialized in this function [-Wmaybe-uninitialized]
  return t;
         ^

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