Single inheritance in C++

1.) single inheritance

-> A derived class with only one base class, is known as single inheritance.

-> When a single class is derived from a single parent class, it is called Single inheritance. It is the simplest of all inheritance.

For example,

-> Car is derived from vehicle

-> Typist is derived from staff

-> Animal is derived from living things

Syntax of Single Inheritance-

class base_classname

{

    properties;

    methods;

};

class derived_classname : visibility_mode base_classname

{

    properties;

    methods;

};

// cpp program on single inheritance.

#include<iostream>

using namespace std;

class A

{

int a;

public:

void show()

{

cout<<" parent show";

}

};

class B: public A

{

int b;

public:

void display()

{

cout<<"child display";

}

};

int main()

{

B b1;

b1.display();

b1.show();

return 0;

}

input/output:-

child display parent show

//cpp program to demonstrate single- inheritance.

#include<iostream>

using namespace std;

class student

{

private:

int rollno;

char name[20];

public:

void getdata()

{

cout<<"Enter roll no:";

cin>>rollno;

cout<<"Enter Name:";

cin>>name;

}

void showdata()

{

cout<<"\n roll no:"<<rollno;

cout<<"\n Name:"<<name;

}

};

class Details :public student

{

private:

int  m1,m2,m3,total;

public:

void  getmarks()

{

getdata();

cout<<"Enter marks m1,m2,m3";

cin>>m1>>m2>>m3;

}

void sum()

{

total=m1+m2+m3;

}

void display()

{

sum();

showdata();

cout<<"\n Total marks="<<total;

}

};

int main()

{

Details d;

d.getmarks();

d.display();

return 0;

}

input/output:-

Enter roll no:12

Enter Name:john

Enter marks m1,m2,m3 4 5 6

 roll no:12

 Name:john

 Total marks=15