foo.c: In function ‘main’:
foo.c:32:13: warning: unused variable ‘maxs2’ [-Wunused-variable]
   32 |         int maxs2=FindMaxs(arr2,n2);
      |             ^~~~~
foo.c:31:13: warning: unused variable ‘maxs1’ [-Wunused-variable]
   31 |         int maxs1=FindMaxs(arr1,n1);
      |             ^~~~~
foo.c: In function ‘FindMaxs’:
foo.c:15:1: warning: control reaches end of non-void function [-Wreturn-type]
   15 | }
      | ^