23_oops.cpp

#include<iostream>
using namespace std;
/*syntax for inheriting in multiple inheritance
 class DerivedC: visibility-mode base1 , visibility-mode base2
{
class body of class "derivedC"
}
*/
class Base1{
  protected:
  int base1int;
  public:
  void set_base1int(int a){
    base1int = a;
  }
};
class Base2{
  protected:
  int base2int;
  public:
  void set_base2int(int a){
    base2int = a;
  }
};
class Base3{
  protected:
  int base3int;
  public:
  void set_base3int(int a){
    base3int = a;
  }
};
class Derived: public Base1 , public Base2, public Base3{
public:
void show(){
    cout<<"The value of Base1 is"<<" " << base1int<<endl;
    cout<<"The value of Base2 is" <<" "<< base2int<<endl;
        cout<<"The value of Base3 is" <<" "<< base3int<<endl;
    cout<<"The sum of these is"<<" " << base1int + base2int + base3int<<endl;
}
};
int main(){
    Derived khushi;
    khushi.set_base1int(23);
      khushi.set_base2int(7);
         khushi.set_base3int(20);
khushi.show();
    return 0;
}