代码可运行

void Random()		//取随机数row、col
{
	u8 j;
	num = 0;
	if(num == 0)
	{
		row = rand()%8;
		col = rand()%8;
		
		Randnum[0] = 10*row+col;

	}
	while(num > 0 && num < 64)
	{
		row = rand()%8;
		col = rand()%8;
		for(j=0;j<num;j++)
		{	
			if(Randnum[j] == 10*row+col) randflag = 1;
			if(Randnum[j] != 10*row+col) randflag = 0;
			if(randflag == 1)
			{
				row = rand()%8;
				col = rand()%8;	
			}
			if(randflag == 0) Randnum[num] = 10*row+col;
		}
	}
	if(num == 63) num = -1;
}
void Int0() interrupt 0 //外部中断 0 的中断函数
{
	delay(1000); //延时消抖
	if(k3 == 0)
	{
		delay(1000);
		num = num + 1;
		Random();
	}
}

产生的不是严格意义上真正的随机数