pointex9.c

来自「C源码集」· C语言 代码 · 共 38 行

#include <stdio.h>
int main ()
{
	int i = 2, j = 3, k;
	int *p = &i, *q = &j;
	int **r;

	r = &p;
	// r becomes address of p

	printf("**r = %i\n", **r);
	// prints the contents of the thing pointed to by r, ie i which is 2

	k = *p**q;
	// k = what p points to times what q points to, ie 2 x 3

	printf("k = %i\n", k);
	//6

	*p = *q;
	// contents of p = contents of q, i = j = 3

	printf("**r = %i\n", **r);
	// prints the contents of the thing pointed to by r, ie i which is 3

	k = **r**q;
	//i x j = 3 x 3

	printf("k = %i\n", k);
	//9

	k = *p/ *q;
	printf("k = %i\n", k);
	//1

	return 0;
}