Alogarithm steps:
Step 1: create the class with private and protected numbers
Step 2: Declare the function with keyword friend. This type function has the argument as function declared class type.
Step 3: Define the friend function outside the class.
Step 4: Use private and protected members in that friend function.
Step 5: Call the friend function from main.
CPP Program To Access Private and Protected Members Outside Classes Using Friend Function
#include
#include
class exforsys
{
private:
int a,b;
public:
void test()
{
a=100;
b=200;
}
friend int compute(exforsys e1)
//Friend Function Declaration with keyword friend and with the object of class exforsys to which it is friend passed to it
};
int compute(exforsys e1)
{
//Friend Function Definition which has access to private data
return int(e1.a+e1.b-5);
}
main()
{
exforsys e;
e.test();
//Calling of Friend Function with object as argument.
cout<<"The result is:"<
SAMPLE INPUT AND OUTPUT:
The result is : 295
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