/*
    2012年9月30日11:34:10
    目的：四个数字按降序排列
*/


# include <stdio.h>
int main(void)
{

    while (1)
    {   
        int a;
        int b;
        int c;
        int d;
        int k;
        printf("请输入四个数：（中间用空格分隔）\n");
        scanf("%d %d %d %d", &a, &b, &c, &d);
        if (a < b)
        {
            k = a;
            a = b;
            b = k;
        }
        if (a < c)
        {
            k = a;
            a = c;
            c = k;
        }
        if (a < d)
        {
            k = a;
            a = d;
            d = a;
        }
        if (b < c)
        {
            k = b;
            b = c;
            c = k;
        }
        if (b < d)
        {
            k = b;
            b = d;
            d = k;
        }
        if (c < d)
        {
            k = c;
            c = d;
            d = k;
        }
        printf("此四数降序为:");
        printf("%d %d %d %d\n", a, b, c, d);
    }

    return 0;
}

[ 本帖最后由 gaolongtou 于 2012-9-30 12:31 编辑 ]

我重申一次：只有代码不描述问题、发帖意图不清晰的，锁帖、删帖，不解释。