C/C++ 宏参数名前加#变为字符串

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在宏定义中，宏参数名前加上#表示为一个字符串。

#include <stdio.h>
#define SET_STRING(str1, str2)   \
    char outStr1[100] = #str1;   \
    char outStr2[100] = #str2;   \
    const char* str = "aabbcc";  \
    if (#str1 == str)            \
        printf("str1 is string\n");\
    else                         \
        printf("str1 is not string\n");      

int main()
{
    SET_STRING(aabbcc, haha);
    printf("outStr1=%s, outStr2=%s\n",outStr1,outStr2);
    return 0;
}

str1 is string
outStr1=aabbcc, outStr2=haha