枚举类型应用实例

口袋中有红，黄，蓝，白，黑 5种颜色的球若干个。每次从口袋中先后取出3个球，问得到3种不同颜色的球的可能取法，输出每种排列的情况。

#include<stdio.h>int main(){enum Color {red,yellow,blue,white,black};enum Color 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;}