#include <stdio.h>
#include <stdlib.h>
int Division(int y,int x)
{
	int sum=0; 
	int i=0;
	while(y>x)//向左移位直到x>=y
	{
		x=x<<1;
		++i;//記錄左移的次數
	}
	x=x>>1; //使x<=y
	 --i;
	while(i >= 0)
	{
		if(y >= x)
		{
			sum += 1<<i;
			y -= x;
		}
		x = x>>1;
		--i;
	}
	return sum;
}
void main()
{   
	printf("the result is :"); 
	printf("%d",Division(90,5));
	getchar();

	
}