foo.c: In function 'FindMaxs':
foo.c:15:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  for(i=0;i<n-1;i++)
  ^~~
foo.c:18:3: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   printf("%d\n",a[i]);
   ^~~~~~
foo.c: In function 'main':
foo.c:6:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d",&n1,&n2);
     ^~~~~~~~~~~~~~~~~~~~~
foo.c:7:22: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
     for(i=0;i<n1;i++)scanf("%d",&a[i]);
                      ^~~~~~~~~~~~~~~~~
foo.c:8:22: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
     for(i=0;i<n2;i++)scanf("%d",&b[i]);
                      ^~~~~~~~~~~~~~~~~