Program to find display area, perimeter and diagonal of a rectangle in C++.

 Q)Write a C++ program to find display area, perimeter and diagonal of a rectangle.

 Source code:

#include<iostream.h>

#include<conio.h>

#include<math.h>

void main()

{

clrscr();

float l,b,area,perimeter,d;

 

cout<<"Enter length and breadth-";

cin>>l>>b;

 

area=l*b;

perimeter=2*(l+b);

d=sqrt(pow(l,2)+pow(b,2));

 

cout<<"Area="<<area<<endl;

cout<<"Perimeter="<<perimeter<<endl;

cout<<"Diagonal="<<d<<endl;

 

getch();

}

 

 Output:

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