#include<iostream.h>
#include<conio.h>
class gram; //source class
class kilo
{
float x;
public:
kilo()
{ x=0; }
kilo(float y)
{ x=y; }
void show()
{ cout<<"Kilo : "<<x<<endl; }
};
class gram
{
float a;
public:
gram()
{ a=0; }
gram(float b)
{ a=b; }
void show()
{ cout<<"Gram : "<<a<<endl; }
operator kilo() //cast operator in source class
{
float z;
z=(a/1000);
return(z);
}
};
void main()
{
clrscr();
kilo k;
gram g(5750);
g.show();
k=g; //call casting operator
k.show();
getch();
}