C++——打印枚举常量字符串
#include <stdio.h>#define MY_INT 7777 #define STR(R) #R #define STR2(R) STR(R) enum MyType{ MyType_NULL, MyType_One, MyType_Two }; int main() { printf("%s\n", STR(MyType_One)); printf("%s\n", STR(HELLO_WORLD)); printf("%s\n", STR(MY_INT)); printf("%s\n", STR2(MY_INT)); const int arr[] = {1,2,3}; arr[1] = 4; // error: assignment of read-only location ‘arr[1]’ return 0; } 输出: MyType_One HELLO_WORLD MY_INT 7777 参考: c++中#与##的作用