#include <iostream>
using namespace std;
class Rectangle
{
private:
float length;
float breadth;
friend void calcArea(Rectangle); // Function Prototype
};
void calcArea(Rectangle r1)
{
r1.length = 5;
r1.breadth = 10;
cout << "Area is: " << r1.length * r1.breadth;
}
int main()
{
Rectangle r1;
calcArea(r1);
return 0;
}
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