/in/foo.c: In function 'FindMax':
/in/foo.c:4:13: warning: unused variable 't' [-Wunused-variable]
   int i,j,k,t;
             ^
/in/foo.c:14:10: warning: 'k' may be used uninitialized in this function [-Wmaybe-uninitialized]
   return k;
          ^
/in/foo.c: In function 'main':
/in/foo.c:25:2: warning: 'k' may be used uninitialized in this function [-Wmaybe-uninitialized]
  printf("%d",FindMax(b,n2));
  ^~~~~~~~~~~~~~~~~~~~~~~~~~
/in/foo.c:24:2: warning: 'k' may be used uninitialized in this function [-Wmaybe-uninitialized]
  printf("%d",FindMax(a,n1));
  ^~~~~~~~~~~~~~~~~~~~~~~~~~