#include<stdio.h>                    //程序的目的是 每次从5个颜色中取出3种 有多少种取法 然后输出排列情况
int main()
{    enum Color{red,yellow,blue,white,black};
    enum Cclor i,j,k,pri;
    int n,loop;
    n=0;
    for(i=red;i<=black;i++)
    {    for(j=red;j<=black;j++)
        {
            if(i!=j)
            {    for(k=red;k<=black;k++)
                {   
                    if((k!=i)&&(k!=j))
                    {    n=n+1;
                        printf("%-4d",n);
                        for(loop=1;loop<=3;loop++)
                        {    switch(loop)
                            {    case 1:    pri=i;break;
                                case 2: pri=j;break;
                                case 3: pri=k;break;
                                default: break;
                            }
                            switch(pri)
                            {    case red: printf("%-10s","red"); break;
                                case yellow: printf("%-10s","yellow"); break;
                                case blue: printf("%-10s","blue"); break;
                                case white: printf("%-10s","white"); break;
                                case black: printf("%-10s",black); break;
                                default: break;
                            }
                        }
                        printf("\n");
                    }
                }
            }
        }
    }
    printf("\ntotal:%5d\n",n);
    return 0;
}

谢谢各位