Single level inheritance in C++.

programs of Single inheritance :

// simple level inheritence 
#include<iostream>
using namespace std;
class A{   // parent class
 int a;  // a is a veriable
 public:  // access modigier
  void set_a(int a1){  // setter method
   a=a1;   // set the value of a 
  }
  int get_a(){
   return a;  
  }
};

class B :public A{ // inherite the class A into class B 
 int b;
 public:
  void set_b(int b1){
   b=b1;
  }
  int multi(){
   return b*get_a(); // get_a() is the method of class A
  }
}; 
int main(){
 B obj;   // obj is the object of class B
 obj.set_a(10);  // here the obj is access the method of class A
 obj.set_b(5); // here set the value of class B veriable b  
 cout<<"multiply of a and b is a*b= "<<obj.multi();  // return the value of b*a

} 

out put:

 multiply of a and b is a*b= 50

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