C Language Example - Replacing Values Using Reference Loop
The three variables a, b, c, cyclically replace their values in order by reference.
Example
#include<stdio.h>
void cyclicSwap(int *a,int *b,int *c);
int main()
{
int a, b, c;
printf("Enter the values of a, b and c:");
scanf("%d %d %d",&a,&b,&c);
printf("Before swap:\n");
printf("a = %d \nb = %d \nc = %d\n",a,b,c);
cyclicSwap(&a, &b, &c);
printf("After swap:\n");
printf("a = %d \nb = %d \nc = %d",a, b, c);
return 0;
}
void cyclicSwap(int *a,int *b,int *c)
{
int temp;
// Swap
temp = *b;
*b = *a;
*a = *c;
*c = temp;
}
The output result is:
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 = 2other extensions