foo.c: In function 'main':
foo.c:6:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
    6 |   scanf("%d,%d\n",&n1,&n2);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~
foo.c:9:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
    9 |   scanf("%d\n",&a[i]);
      |   ^~~~~~~~~~~~~~~~~~~
foo.c:13:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   13 |   scanf("%d\n",&a[j]);
      |   ^~~~~~~~~~~~~~~~~~~
foo.c: In function 'FindMax':
foo.c:21:12: warning: 'n' is used uninitialized in this function [-Wuninitialized]
   21 | for(i=0;i<n-1;i++)
      |           ~^~

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