编辑代码

#include <iostream>
using namespace std;
int divideToSquare(int length, int width) {

if (length < width || length <= 0 || width <= 0) {
cout << "please check your input" << endl;
 return -1;
 }

if (length % width == 0) {
return width;
}

int smallWidth = length % width;
return divideToSquare(width, smallWidth);
}
int main() {
int length; int width;
while (true){
cout << "输入矩形的长度:"; cin >> length;
cout << "输入矩形的宽度:"; cin >> width;
if (length <= 0 || width <=0 ) {
break;}

cout <<"面积为： " << divideToSquare(length, width) << endl;
}