Program 5 – Meter/centimeter to Feet/inches

Create two classes DM and DB which store the value of distances. DM stores distance in meters and centimeters and DB in feet and inches. Write a program that can read values for the class objects and add one object of DM with another object of DB. Use a friend function to carry out the addition operation. The object that stores the results may be a DM object or DB object, depending on the units in which the results are required.The display should be in the format of feet and inches or meters or centimeters depending on the object on display.

#include <iostream>
using namespace std;

class DM;

class DB{
    float feet, inch;
    public:
    void getData()
    {
        cout<<"nEnter the distance in(feet-inch):";
        cin>>feet>>inch;
    }
    void Display()
    {
        cout<<"nThe distance is:";
        cout<<feet<<" feet and "<<inch<<" inch";
    }
    friend void add(DB &b, DM &a);
    
};

class DM{
    float m, cm;
    public:
    void getData()
    {
        cout<<"nEnter the distance in(meter-centimeter):";
        cin>>m>>cm;
    }
    void Display()
    {
        cout<<"nThe distance is:";
        cout<<m<<" meter and "<<cm<<" centimeter";
    }
    friend void add(DB &b, DM &a);

};

void add(DB &b, DM &a)
{
 int ch;
 cout<<"nPress 1 for meter-centi:";
 cout<<"nPress 2 for feet-inch:";
 cout<<"nEnter your choice:";
 cin>>ch;
 if(ch==1)
 {
  DM d;
  int c=(a.m*100+a.cm+b.feet*30.48+b.inch*2.54);
  if(c>=100)
  {
   d.m=c/100;
   d.cm=c%100;
  }
  else
  {
   d.m=0;
   d.cm=c;
  }
  d.Display();
 }
 else
 {
  DB d;
  int i=(a.m*39.37+a.cm*.3937008+b.feet*12+b.inch);
  if(i>=12)
  {
   d.feet=i/12;
   d.inch=i%12;
  }
  else
  {
   d.feet=0;
   d.inch=i;
  }
  d.Display();
 }
}


int main()
{
    DM a;
    DB b;
    a.getData();
    b.getData();
    add(b,a);
    return 0;
}