Added the code for Friend Class in C++

Author: pushpakumari5117

OOPs/Friend Class & Function/Friend_Class_cpp.cpp

@@ -0,0 +1,42 @@
+// C++ program to demonstrate Friend Class
+
+// Friend Class - A friend class can access the private and protected members of the class in which 
+// it is declared as a friend.
+
+#include<bits/stdc++.h>
+using namespace std;
+
+// class with Friend class
+class Person{
+    private:
+        string name;
+        int age;
+    public:
+        Person(string iname,int iage){
+                name=iname;
+                age=iage;
+            }
+        // class Introduce is a friend of class Person
+        friend class Introduce;
+};
+
+// Friend class
+class Introduce{
+    public:
+        void display(Person& x){
+            cout<<"Name : "<<x.name<<endl;
+            cout<<"Age : "<<x.age<<endl;
+        }
+};
+
+int main(){
+    // Creating an object of class Person
+    Person p("abc",10);
+    
+    // Creating an object of class Introduce
+    Introduce i;
+    
+    // Accessing private members of class Person through class Introduce
+    i.display(p);
+    return 0;
+}