C语言中的指针传递示例

/*

 * test.c

 *

 *  Created on: 2011-6-28

 *      Author: Administrator

 */



#include <stdio.h>



void doub(int *val1, int *val2)

{

int temp = 0;

temp = *val1;

*val1 = *val2;

*val2 = temp;

}



int main()

{

int a = 2;

int b = 3;

doub(&a, &b);

printf("a = %d, b = %d", a, b);

return 0;

}