00171.c (368B)
1 #include <stdio.h> 2 3 int main() 4 { 5 int a; 6 int *b; 7 int *c; 8 9 a = 42; 10 b = &a; 11 c = NULL; 12 13 printf("%d\n", *b); 14 15 if (b == NULL) 16 printf("b is NULL\n"); 17 else 18 printf("b is not NULL\n"); 19 20 if (c == NULL) 21 printf("c is NULL\n"); 22 else 23 printf("c is not NULL\n"); 24 25 return 0; 26 } 27 28 /* vim: set expandtab ts=4 sw=3 sts=3 tw=80 :*/