如何将枚举类型变量转换为字符串?
问题描述：
如何让 printf 显示枚举类型变量的值?例如:
How to make printf to show the values of variables which are of an enum type? For instance:
typedef enum {Linux, Apple, Windows} OS_type;
OS_type myOS = Linux;
而我需要的是类似
printenum(OS_type, "My OS is %s", myOS);
必须显示字符串Linux"，而不是整数.
which must show a string "Linux", not an integer.
我想，首先我必须创建一个值索引的字符串数组.但我不知道这是否是最美丽的方式.有可能吗?
I suppose, first I have to create a value-indexed array of strings. But I don't know if that is the most beautiful way to do it. Is it possible at all?
答
确实没有什么漂亮的方法可以做到这一点.只需设置一个由枚举索引的字符串数组即可.
There really is no beautiful way of doing this. Just set up an array of strings indexed by the enum.
如果你做很多输出，你可以定义一个操作符<<它接受一个枚举参数并为您进行查找.
If you do a lot of output, you can define an operator<< that takes an enum parameter and does the lookup for you.