C语言枚举类型使用简介

1：枚举里面的值是常量; 例如 enum color {red,orange,yellow};
2：枚举列表中的常量默认为0，1，2等等 例如 enum color {red,orange,yellow};常量值默认为0，1，2

3: 枚举列表常量值是可以指定的,且指定值后的枚举值将递增例如enum color {red,orange=10,yellow};yellow=11

4: 在C语言中枚举可以递增运算符++,而C++中需要强制转换定义为int再运算符++

enum用法例子如下

#include<stdio.h>

#include<string.h>

enumspecturm {red,orange,yellow,green,blue,violet};

constchar*colors[]={"red","orange","yellow","green","blue","violet"};

#defineLEN 30

intmain(void)

{

charchoice[LEN];

intcolor;

intcolor_is_found=0;

puts("Enter a color (empty line to quit):");

while(gets(choice)!=NULL&&choice[0]!='\0')

{

for(color=red;color<=violet;color++)

{

if(strcmp(choice,colors[color])==0)

{

color_is_found=1;

break;

}

}

if(color_is_found)

switch(color)

{

case0:puts("Roses are red");break;

case1:puts("Poppies are orange");break;

case2:puts("Sunflowers are yellow");break;

case3: puts("Grass is green");break;

case4:puts("Bluebells are blue");break;

case5:puts("Violets are violet");break;

}

elseprintf("I don't know about the color %s.\n",choice);

color_is_found=0;

puts("Next color,please(empty line to quit):");

}

puts("Goodbye!");

return0;

}原文链接: https://www.cnblogs.com/xiaobaigang/archive/2011/05/27/2059845.html

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