程序代码：

# include <stdio.h>
int max(int i, int j);

int main(void)
{
    int a, b, c;

    printf("请输入三个整数：\n");
    scanf("%d %d %d", &a, &b, &c);

    max(a, b);
    max(b, c);
    max(a, c);
   

    printf("三者从大到小排序为:%d %d %d\n", a, b, c);
    return 0;
}

int max(int i, int j)
{
    int t;

    if (i < j)
    {
        t = j;
        j = i;
        i = t;
    }

    printf("i = %d j = %d\n", i, j);

    return (i,j);
}