将三个数从大到小输出

将三个数从大到小输出：

方法1：创建临时变量

#define _CRT_SECURE_NO_WARNINGS

#include<stdio.h>

#include<stdlib.h>

int main()

{

int a = 0, b = 0, c = 0;

int tmp = 0;

scanf_s("%d%d%d", &a, &b, &c);

if (a < b)

{

tmp = a;

a = b;

b = tmp;

}

if (a < c)

{

tmp = a;

a = c;

c = tmp;

}

if (b < c)

{

tmp = b;

b = c;

c = tmp;

}

printf("%d %d %d\n", a, b, c);

system("pause");

return 0;

}

方法2：用函数实现

#define _CRT_SECURE_NO_WARNINGS

#include<stdio.h>

#include<stdlib.h>

int swap(int *a, int *b)

{

int tmp = *a;

*a = *b;

*b = tmp;

}

int main()

{

int a = 0, b = 0, c = 0;

int tmp = 0;

scanf_s("%d%d%d", &a, &b, &c);

if (a < b)

{

swap(&a, &b);

}

if (a < c)

{

swap(&a,&c);

}

if (b < c)

{

swap(&b, &c);

}

printf("%d %d %d\n", a, b, c);

system("pause");

return 0;

}