foo.c: In function 'main':
foo.c:13:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   13 |  scanf("%d",&n);
      |  ^~~~~~~~~~~~~~
foo.c:15:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   15 |   scanf("%d",&x[i]);
      |   ^~~~~~~~~~~~~~~~~
foo.c: In function 's':
foo.c:8:12: warning: 'm' may be used uninitialized in this function [-Wmaybe-uninitialized]
    8 |     return m;
      |            ^
foo.c: In function 'main':
foo.c:4:6: warning: 'm' may be used uninitialized in this function [-Wmaybe-uninitialized]
    4 |  int m,i;
      |      ^

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