1 typedef int xtype; 2 foo(p,pc)3 foo (p, pc) 4 xtype *p; 5 char *pc; 6 { 7 xtype a; 8 unsigned b = 0; 9 10 a = *p; 11 p[1] = a; 12 if ((unsigned) p[1] > 0) 13 return 1; 14 return a; 15 } 16