Introduction

I have used CodeBlocks compiler for debugging purpose. But you can use any C++ programming language compiler as per your availability.

#include <iostream>
 
using namespace std;
 
int main()
{
    int i, num1, num2, max, cm=1;
 
    //Read two numbers from user
    cout<<"Enter any two numbers:";
    cin>>num1;
    cin>>num2;
 
    // Find max number between num1 and num2
    max = (num1 > num2) ? num1 : num2;
 
    i = max;
 
    //Loop runs forever till lcm is not found
    while(1)
    {
        if(i%num1 == 0 && i%num2 == 0)
        {
            //If i divides both num1 and num2 then lcm is found hence exit from loop
            cm = i;
            break;
        }
         //If lcm is not found then generate next multiple of max between both numbers
 
        i += max;
    }
 
    cout<<"LCM of " << num1 << " and " << " is "<< cm;
 
    return 0;
 
}
 

Result