Question

试编写函数判断计算机的字节存储顺序是开序(little endian)还是降序(bigendian)

程序如下：
bool IsBigendian()
{
unsigned short usData = 0x1122;
unsigned char *pucData = (unsigned char*)&usData;
return (*pucData == 0x22);
}
看不懂，麻烦各位高手帮忙解释一下

Answer 1

bool IsBigendian()
{
unsigned short usData = 0x1122; //类型不必解释吧 值得一提的是这里用的是16进制
unsigned char *pucData = (unsigned char*)&usData;//指向usDate的地址 并且强制转换为 (unsigned char*)类型
return (*pucData == 0x22);// 返回判别式真假
}