I need to calculate LCM of two numbers. There should be two classes written for it, PrimeFactor and LCM. I am badly stuck in its implementation. can someone help me please?

Here is code according to your requirement. it is running and easy to understand code. 

#include <iostream.h>

class PrimeFactor   //prime factor class

{

public:

       int number;

       int A[10];

       int B[10];

       int size;

       int* Prime_Factor()   //prime factor function

       {

              int PN[6]={2,3,5,7,11,13};

              int j=0, i=0;

             

              int x=number;

              while (x!=1)

              {

                     if ((x%PN[j])==0)

                     {

                           x=x/PN[j];

                           A[i]=PN[j];

                           i++;

                     }

                     else

                           j++;  

              }

              size=i;

              return A;

       }

};

class LCM:public PrimeFactor //LCM class inheriting PrimeFactor Class

{

public:

       int Calculate_LCM(LCM help)   //function to calculate LCM

       {

              int lcm=1;

              for (int i=0;i<this->size;i++)                  //For First Prime Factors Array

                     for (int j=0;j<help.size;j++)            //For Second Prime Factors Array

                     {if ((this->A[i])==(help.A[j]))  //Pairing

                                  if (this->A[i]!=0)

                                         {

                                                lcm=lcm*this->A[i];

                                                this->A[i]=0;

                                                help.A[j]=0;

                                 

                     }}

                     return lcm;

       }

};

void main()

{

       LCM P1, P2;

       int*k1;

       cout<<"\nEnter a number: ";

       cin>>P1.number;

       k1=P1.Prime_Factor();             //Prime Factors for First Number

       cout<<"The Factors of "<<P1.number<<" are:"<<endl;

       for (int i=0;i<P1.size;i++)

       {

                     cout<<*k1<<"  ";

                     k1++;

       }

       int*k2;

       cout<<"\nEnter a number: ";

       cin>>P2.number;

       k2=P2.Prime_Factor();             //Prime Factors for Second Number

       cout<<"The Factors of "<<P2.number<<" are:"<<endl;

       for (i=0;i<P2.size;i++)

       {

                     cout<<*k2<<"  ";

                     k2++;

       }

       int a;

       a=P1.Calculate_LCM(P2);

       cout<<endl<<"The LCM is "<<a<<endl;//Passing Prime Factors of First and Second Number to LCM Function