利用枚举类型实现统计

标签：include   yellow   black   white   color   

口袋中有5种颜色的小球，每次从口袋中任意取3个，问得到3种不同颜色的小球的可能取法？

#define _CRT_SECURE_NO_WARNINGS 1

#include<iostream>

#include<iomanip>

using namespace std;

int main()

{

enum color{red,yellow,blue,white,black};//声明枚举类型color

color pri;    //定义color类型的变量pri

int i, j, k,n = 0, loop;   //n是累计不同颜色的组合数

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;

cout << setw(3) << n;

for (loop = 1; loop <= 3; loop++)

{

switch (loop)

{

case 1:pri = color(i); break;

case 2:pri = color(j); break;

case 3:pri = color(k); break;

defaul:break;

}

switch (pri)//判断pri的值，输出相应的"颜色"

{

case red:cout << setw(8) << "red"; break;

case yellow:cout << setw(8) << "yellow"; break;

case blue:cout << setw(8) << "blue"; break;

case white:cout << setw(8) << "white"; break;

case black:cout << setw(8) << "black"; break;

default:break;

}

}

cout << endl;

}

}

}

cout << "total:" << n << endl;//输出符合条件的组合的个数

getchar();

return 0;

}

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利用枚举类型实现统计

标签：include   yellow   black   white   color   

原文地址：http://lk123456.blog.51cto.com/10831443/1763948