在 c 中定义枚举时，字符串常量之前的错误预期标识符

Question

我是 C 新手，我正在尝试定义这样的枚举：

enum PrimaryColor {"red","yellow","blue"}; /* can only be set to red yello or blue */

但是当我尝试编译时，我得到了这个错误

error expected identifier before string constant

完整代码：

#include <stdio.h>
#include <stdlib.h>

int main()
{
    enum PrimaryColor {"red","yellow","blue"}; /* can only be set to red yello or blue */
    /* enums use a number to represent the value under the hood and we can sepcify a number that represents the value
    ex:
    */
    enum Directions {"right","left","up","down"=100}; /* here down is reprecented by a 100 /*

    /* when you specify the number reprecenting the value the number next to it will be the number before +1
    ex:
    */


    enum Directions {"right","left"=7,"down","up"}; /* left is reprecented by 7 so the number reprecenting the value(down) next to it is reprecented by 8 */
    enum Directions {"right","left"=17,"down","up"}; /* left is reprecented by 7 so the number reprecenting the value(down) next to it is reprecented by 18 */

}


}

谢谢！

Answer 1

枚举不是字符串，你可以这样定义它们

enum PrimaryColor {Red, Yellow, Blue};

并像这样使用它们

PrimaryColor.Red; //this is = 1

我建议你阅读枚举：good starting place