Answer to Question #180572 in C++ for Gaurav Kumar

Question

Class to class conversion can be 

done in source as well as 

destination class. write a 

program to support this.

Answer 1

#include <iostream>
using namespace std;


class Metrs
{
private:
    int m_metrs;
public:
    Metrs(int metrs = 0)
    {
        m_metrs = metrs;
    }

   operator int() { return m_metrs; }

    int getMetrs() { return m_metrs; }
    void setMetrs(int metrs) { m_metrs = metrs; }
};


class Santimetrs
{
private:
    int m_santimetrs;
public:
    Santimetrs(int santimetrs = 0)
    {
        m_santimetrs = santimetrs;
    }

    operator Metrs() { return Metrs(m_santimetrs / 100); }
};


void printMetrs(Metrs Metrs)
{
    cout << Metrs;
}
   
int main()
{
    // example class to class conversion 
    int a = 248;
    double b = a; // an int value is implicitly converted to a double value
    float c = 3.5;
    int d = static_cast<int>(c);//an float value is explicitly converted to a int value
    //example converting a class to a class inside a custom class
    Santimetrs santi(678);
    printMetrs(santi);//santi (Santimetrs) is implicitly converted to Metrs here
    return 0;
}