Chapter: 11th Computer Science : Chapter 16 : Inheritance
C++ Hierarchical inheritance Program
Illustration 16.4 Hierarchical inheritance
#include <iostream>
using namespace std;
class student //base class
{
private :
char name[20];
int rno;
public:
void acceptname()
{
cout<<"\n Enter roll no and name .. ";
cin>>rno>>name;
}
void displayname()
{
cout<<"\n Roll no :-"<<rno;
cout<<"\n Name :-"<<name<<endl;
}
};
class qexam : public student //derived
class with single base class
{
public:
int mark1, mark2 ,mark3,mark4,mark5,mark6;
void acceptmark()
{
cout<<"\n Enter lang,eng,phy,che,csc,mat marks for
quarterly exam.. ";
cin>>mark1>>mark2>>mark3>>mark4>>mark5>>mark6;
}
void displaymark()
{
cout<<"\n\t\t Marks Obtained in quarterly";
cout<<"\n Language.. "<<mark1;
cout<<"\n English .. "<<mark2;
cout<<"\n Physics .. "<<mark3;
cout<<"\n Chemistry.. "<<mark4;
cout<<"\n Comp.sci.. "<<mark5;
cout<<"\n Maths .. "<<mark6;
}
};
class hexam : public student //derived
class with single base class
{
public:
int mark1, mark2 ,mark3,mark4,mark5,mark6;
void acceptmark()
{
cout<<"\n Enter lang,eng,phy,che,csc,mat marks for
halfyearly exam.. ";
cin>>mark1>>mark2>>mark3>>mark4>>mark5>>mark6;
}
void displaymark()
{
cout<<"\n\t\t Marks Obtained in Halfyearly";
cout<<"\n Language.. "<<mark1;
cout<<"\n English .. "<<mark2;
cout<<"\n Physics .. "<<mark3;
cout<<"\n Chemistry.. "<<mark4;
cout<<"\n Comp.sci.. "<<mark5;
cout<<"\n Maths .. "<<mark6;
}
};
int main()
{
qexam q1;
hexam h1;
q1.acceptname(); //calling
base class function using derived class object
q1.acceptmark(); //calling
base class function
h1.acceptname(); //calling
base class function using derived class object
h1.displayname(); //calling
base class function using derived class object
h1.acceptmark();
h1.displaymark(); //calling
base class function using its
//derived class object
return 0;
}
Output
Enter roll no and name .. 1201 KANNAN
Enter lang,eng,phy,che,csc,mat marks for quarterly exam..
95 96 100 98 100 99
Roll no :-1201
Name :-KANNAN
Marks Obtained in quarterly
Language.. 95
English .. 96
Physics .. 100
Chemistry.. 98
Comp.sci.. 100
Maths .. 99
Enter roll no and name .. 1201 KANNAN
Enter lang,eng,phy,che,csc,mat marks for halfyearly exam..
96 98 100 100 100 100
Roll no :-1201
Name :-KANNAN
Marks Obtained in Halfyearly
Language.. 96
English .. 98
Physics .. 100
Chemistry.. 100
Comp.sci.. 100
Maths .. 100
In
the above program the class “qexam” and “hexam” are derived from class
“student”. Here for single base class more than one derived class.So this comes
under hierarchical inheritance.
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