Common Multiple

C++ program to find the n^th common multiple of two given numbers.

#include <iostream>

#include <conio.h>

using namespace std;

int main()

  {

    int a,b,n=0,num;

    std::cout << "Enter two numbers to find common multiple : "<< "\n";

    std::cin>>a>>b;

    std::cout<<"Enter the the common multiple required : ";

    std::cin>>num;

    for (size_t i = 4; ; i++)

    {

      if(i%a==0 && i%b==0)

          n++;

      if (n==num) {

        std::cout<<i;

        break;

      }

    }

    getch();

    return 0;

  }