C++ Example - Find the greatest common divisor of two numbers
User inputs two numbers and finds the greatest common divisor of these two numbers.
Example
#include <iostream>
using namespace std;
int main()
{
int n1, n2;
cout << "Enter two integers:";
cin >> n1 >> n2;
while(n1 != n2)
{
if(n1 > n2)
n1 -= n2;
else
n2 -= n1;
}
cout << "HCF = " << n1;
return 0;
}
The output of the above program execution is:
输入两个整数: 78 52 HCF = 26
Example
#include <iostream>
using namespace std;
int main() {
int n1, n2, hcf;
cout << "Enter two integers:";
cin >> n1 >> n2;
//If n2 is greater than n1, swap the two variables
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;
}
The output of the above program execution is:
输入两个整数: 78 52 HCF = 26other extensions