#include <stdio.h>
     void f(int *aa, int *bb)
     {
          *bb = 8;
          aa[1] = bb[2];
          aa = bb;
     }

     main()
     {
          int a[5] = { 1, 2, 3, 4, 5 }, *b;
          b = a + 2;
          f(a,b);
          printf("%d %d %d %d %d\n", 
                   a[0], a[1], a[2], a[3], a[4]);
     }

     #include <stdio.h>
     void g(int *aa, int *bb)
     {
          bb[2] = aa[-2];
          *aa++ = 17;
          *++aa = 10;
     }

     main()
     {
          int blap[7] = { 1, 2, 3, 4, 5, 6, 7 };
          int *c = blap + 3;
          g(c,blap);
          printf("%d %d %d %d %d %d %d\n", 
                   blap[0], blap[1], blap[2], blap[3], blap[4],
		   blap[5], blap[6]);
     }