C 语言实例 - 使用引用循环替换数值

实例

#include <stdio.h>
 
void cyclicSwap(int *a,int *b,int *c);
 
int main()
{
    int a, b, c;
 
    printf("输入 a, b 和 c 的值: ");
    scanf("%d %d %d",&a,&b,&c);
 
    printf("交换前:\n");
    printf("a = %d \nb = %d \nc = %d\n",a,b,c);
 
    cyclicSwap(&a, &b, &c);
 
    printf("交换后:\n");
    printf("a = %d \nb = %d \nc = %d",a, b, c);
 
    return 0;
}
void cyclicSwap(int *a,int *b,int *c)
{
 
    int temp;
 
    /* 交换 */
    temp = *b;
    *b = *a;
    *a = *c;
    *c = temp;
}

输入 a, b 和 c 的值: 1 2 3
交换前:
a = 1 
b = 2 
c = 3
交换后:
a = 3 
b = 1 
c = 2