一、模拟实现CE的数据搜索功能

//其中有0xAA，超过有符号char范围，在vscode中会报错，所以使用unsigned char
unsigned char data[100] = 
{
	0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x07,0x09,
	0x00,0x20,0x10,0x03,0x03,0x0C,0x00,0x00,0x44,0x00,
	0x00,0x33,0x00,0x47,0x0C,0x0E,0x00,0x0D,0x00,0x11,
	0x00,0x00,0x00,0x02,0x64,0x00,0x00,0x00,0xAA,0x00,
	0x00,0x00,0x64,0x10,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x02,0x00,0x74,0x0F,0x41,0x00,0x00,0x00,
	0x01,0x00,0x00,0x00,0x05,0x00,0x00,0x00,0x0A,0x00,
	0x00,0x02,0x74,0x0F,0x41,0x00,0x06,0x08,0x00,0x00,
	0x00,0x00,0x00,0x64,0x00,0x0F,0x00,0x00,0x0D,0x00,
	0x00,0x00,0x23,0x00,0x00,0x64,0x00,0x00,0x64,0x00
};
//step代表步长，即表示字节长度
void find(int step){
	if (step == 1)
	{
		unsigned char* p = (unsigned char*)data;
		for (int i = 0; i < 100 - step + 1; i++)
		{
			if (*(p + i) == 0x64)
			{
				printf("0x%x \t 0x%x \n",(p + i), *(p + i));
			}
		}
	}else if (step == 2)
	{
		unsigned short* p = (unsigned short*)data;
		for (int i = 0; i < 100 - step + 1; i++)
		{
			if (*((unsigned short*)&data[i]) == 0x64)
			{
				printf("0x%x \t 0x%x \n", (&data[i]), *((&data[i])));
			}
		}
	}else if (step == 4)
	{
		for (int i = 0; i < 100 - step + 1; i++)
		{
			if (*((unsigned int*)&data[i]) == 0x64)
			{
				printf("0x%x \t 0x%x \n", (&data[i]), *((&data[i])));
			}
		}
	}
}

 

int main(int argc, char* argv[]){
	find(1);
	find(2);
	find(4);
	return 0;
}