c++ - 如何使用 unsigned char 分配 #define

Question

我想知道可以用unsigned char分配#define吗？如果可以怎么办？

例如:

 #define ACCESS_PSS {0x32,0xFD,0x6E,0x2D}


    int main(){
    unsigned char ResponseData[100];
    for (int i = 0; i <4;i++0){

                    if (ResponseData[i+5]==ACCESS_PSS){ //how to do this???
                                cout<<5<<endl;
                                              }

ResponseData 从程序获取值，字节 5 ta 8 等于 ACCESS_PSS

Answer 1

最好的方法:

const uint8_t ACCESS_PSS [4] = {0x32,0xFD,0x6E,0x2D};

if(memcmp(&ResponseData[i+5], ACCESS_PSS, 4) == 0)

替代方式(复合文字):

if(memcmp(&ResponseData[i+5], (uint8_t[4]){0x32,0xFD,0x6E,0x2D}, 4) == 0)