inheritance
it is used to define relationship between two class,
which a child class occurs all the properties and behaviours of a parent class.
Provides code reusability.
Ex: in my framework I have a TestBase class which I store
all my reusable code and methods. My test execution classes and
elements classes will extend the TestBase in order to reuse the code.inheritance
class left {
public:
void foo();
};
class right {
public:
void foo();
};
class bottom : public left, public right {
public:
void foo()
{
//base::foo();// ambiguous
left::foo();
right::foo();
// and when foo() is not called for 'this':
bottom b;
b.left::foo(); // calls b.foo() from 'left'
b.right::foo(); // call b.foo() from 'right'
}
};inheritance
#include <iostream>
using namespace std;
class Area
{
public:
int getArea(int l, int b)
{
return l * b;
}
};
class Perimeter
{
public:
int getPerimeter(int l, int b)
{
return 2*(l + b);
}
};
class Rectangle : public Area, public Perimeter
{
int length;
int breadth;
public:
Rectangle()
{
length = 7;
breadth = 4;
}
int area()
{
return Area::getArea(length, breadth);
}
int perimeter()
{
return Perimeter::getPerimeter(length, breadth);
}
};
int main()
{
Rectangle rt;
cout << "Area : " << rt.area() << endl;
cout << "Perimeter : " << rt.perimeter() << endl;
return 0;
}Copyright © 2021 Codeinu
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