define连接字符串

• define conn(x,y) x##y，连接x与y

• define toString(x) #x，将x变成字符串

#include <stdio.h>
#define conn(x,y) x##y
#define toChar(x) #x

int
main(void)
{
        int a = conn(123,234);
        char* b = toChar(1);
        printf("%d", a);
        printf("%c", *b);

        return 0;
}

标签：##,toChar,int,字符串,连接,conn,define
来源： https://www.cnblogs.com/cwhan/p/14807982.html