foo.c: In function 'FindiSecondMax':
foo.c:33:9: warning: variable 'smax' set but not used [-Wunused-but-set-variable]
     int smax = 0;
         ^~~~
foo.c:23:9: warning: variable 'max' set but not used [-Wunused-but-set-variable]
     int max = 0;
         ^~~
foo.c: In function 'main':
foo.c:10:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d", &m, &n);
     ^~~~~~~~~~~~~~~~~~~~~
foo.c:12:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &a[i]);
         ^~~~~~~~~~~~~~~~~~
foo.c:14:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &b[j]);
         ^~~~~~~~~~~~~~~~~~

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