简单枚举类型——植物与颜色

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本文介绍了一个使用枚举类型来匹配不同颜色与对应花卉的例子。通过读取输入的颜色名称，程序能够输出对应的花卉及其颜色，若颜色未定义则提示未知。

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Problem Description

请定义具有red, orange, yellow, green, blue, violet六种颜色的枚举类型color，根据输入的颜色名称，输出以下六种植物花朵的颜色：

Rose(red), Poppies(orange), Sunflower(yellow), Grass(green), Bluebells(blue), Violets(violet)。如果输入的颜色名称不在枚举类型color中，例如输入purple，请输出I don't know about the color purple.

Input

输入数据有多行，每行有一个字符串代表颜色名称，颜色名称最多30个字符，直到文件结束为止。

Output

输出对应颜色的植物名称，例如：Bluebells are blue. 如果输入的颜色名称不在枚举类型color中，例如purple, 请输出I don't know about the color purple.

Example Input

blue
yellow
purple

Example Output

Bluebells are blue.
Sunflower are yellow.
I don't know about the color purple.

Hint

请用枚举类型实现。

#include<stdio.h>
#include<string.h>
enum color{red,orange,yellow,green,blue,violet,no}w;
void main()
{
char str[31];
while(gets(str))
{
if(strcmp(str,"red")==0)
w=red;
else if(strcmp(str,"orange")==0)
w=orange;
else if(strcmp(str,"yellow")==0)
w=yellow;
else if(strcmp(str,"green")==0)
w=green;
else if(strcmp(str,"blue")==0)
w=blue;
else if(strcmp(str,"violet")==0)
w=violet;
else
w=no;
switch(w)
{
case red:printf("Rose are red.\n");break;
case orange:printf("Poppies are orange.\n");break;
case yellow:printf("Sunflower are yellow.\n");break;
case green:printf("Grass are green.\n");break;
case blue:printf("Bluebells are blue.\n");break;
case violet:printf("Violets are violet.\n");break;
case no:printf("I don't know about the color %s.\n",str);break;
}
}
}