C++ 实例 _ 求两数的最大公约数

#include <iostream>
using namespace std;
 
int main()
{
 int n1, n2;
 
 cout << "输入两个整数: ";
 cin >> n1 >> n2;
 
 while(n1 != n2)
 {
 if(n1 > n2)
 n1 -= n2;
 else
 n2 -= n1;
 }
 
 cout << "HCF = " << n1;
 return 0;
}

#include <iostream>
using namespace std;
 
int main() {
 int n1, n2, hcf;
 cout << "输入两个整数: ";
 cin >> n1 >> n2;
 
 // 如果 n2 大于 n1 交换两个变量
 if ( n2 > n1) { 
 int temp = n2;
 n2 = n1;
 n1 = temp;
 }
 
 for (int i = 1; i <= n2; ++i) {
 if (n1 % i == 0 && n2 % i ==0) {
 hcf = i;
 }
 }
 
 cout << "HCF = " << hcf;
 return 0;
}