#include <stdio.h>intmain(){int a;int*b;int*c;
a =42;
b = &a;
c = NULL;printf("%d\n", *b);if(b == NULL)printf("b is NULL\n");elseprintf("b is not NULL\n");if(c == NULL)printf("c is NULL\n");elseprintf("c is not NULL\n");return0;}/* vim: set expandtab ts=4 sw=3 sts=3 tw=80 :*/