编辑代码

#include <iostream>
using namespace std;
int loop(int length, int width)
{
    if (length % width == 0) 
    {
        return width;
    }
    int smallWidth = length % width;

    return loop(width, smallWidth);
}
int main() 
{

    int length;
    int width;
    cout<<"输入长";
    cin>>length;
    cout<<"输入高";
    cin>>width;
	cout << "the width of square is " << loop(length, width) << endl;
	return 0;
}