C 练习实例66
C 语言教程
· 2019-02-22 10:26:30
题目：输入3个数a,b,c，按大小顺序输出。
程序分析：利用指针方法。
实例
// Created by www.codercto.com on 15/11/9.
// Copyright © 2015年 码农教程. All rights reserved.
//
# include<stdio.h>
void swap(int *, int *);
int main(void)
{
int a, b, c;
int *p1, *p2, *p3;
printf("输入 a, b ,c:\n");
scanf("%d %d %d", &a, &b, &c);
p1 = &a;
p2 = &b;
p3 = &c;
if(a>b)
swap(p1, p2);
if(a>c)
swap(p1, p3);
if(b>c)
swap(p2, p3);
printf("%d %d %d\n", a, b, c);
}
void swap(int *s1, int *s2)
{
int t;
t = *s1; *s1 = *s2; *s2 = t;
}
以上程序执行输出结果为：
输入 a, b ,c: 1 3 2 1 2 3
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