Design and write classes in a class hierarchy to describe different types of geo

Question

Design and write classes in a class hierarchy to describe different types of geometric shapes. Provide information in the classes in order to compute the area of each of the shapes. Create three separate classes (Triangle,Rectangle,Circle) that are derived from a separate base class (Shape). Write a program that allows a user to create any of the different shape types. Prompt the user to select the shape type and enter the necessary dimensions (i.e. refer to formulas below; rectangle needs width and height, circle needs radius, triangle needs height and base). After the user has finished creating the shape, compute and print out the area.

Use the following formulas for your program:

Triangle:

area = ½ * base * height

Rectangle:

area = width * height

Circle:

area = PI * radius2

Triangle:

area = ½ * base * height

Rectangle:

area = width * height

Circle:

area = PI * radius2

Explanation / Answer

/* program using derived classes */

#include<iostream.h>
#include<conio.h>

class shape
{
protected:
doubel x,y;
public:
void get_data();
void dispaly_area();
};

class triagle : public shape
{
public:
void get_data()
{
cout<<" Enter data for a Triangle";
cout<<" Enter Base and Height :";
cin>>x>>y;
}

void display_area()
{
cout<<" Area of Triangle";
double area;
area = 0.5 * x * y;
cout<<"Area of a triangle:"<<area;
}
};

class rectangle : public shape
{
public:
void get_data()
{
cout<<" Enter data for a Rectangle";
cout<<" Enter width and height";
cin>>x>>y;
}
void display_area()
{
cout<<" Area of Rectangle";
double area;
area = x * y;
cout<<"Area of a rectangle:"<<area;
}
};

void main()
{
triangle tri;
rectangle rect;
clrscr();
cout<<" Measures of Different Shapes:";
cout<<" 1. Area of a Triangle";
cout<<" 2. Area of a Rectangle";
cout<<" 3. Exit";
cout<<" Enter your choice:";
cin>>choice;
switch(choice)
{
case 1:
tri.get_data();
tri.display_area();
break;
case 2:
rect.get_data();
rect.display_area();
break;
case 3:
break;
default:
cout<<"Enter the correct choice";
break;
}
getch();
}

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