C++ program to find the area of a rectangle

In this chapter of C++ program tutorial out task is: 

• Write a C++ program to take length and breadth of the rectangle as an user input and displaying the area of the rectangle

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C++ program to calculate the area of the rectangle 

Below is the C++ program to take length and breadth as an user input and then calculating and displaying the area of the rectange.

#include<iostream>
using namespace std;
int main()
{
        float length , breadth , areaOfTheReactangle;
        cout<<"Enter the length and breadth of the rectangle separated by a space"<<endl;
        cin>>length>>breadth;
        areaOfTheReactangle = length * breadth;  //Calculating the area of the rectangle
        cout<<"The area of the rectangle is"<<endl<<areaOfTheReactangle;
        return 0;
}

OUTPUT :

Enter the length and breadth of the rectangle separated by a space

2.3 3.0

The area of the rectangle is

6.9

 

EXPLANATION:

In the above C++ program:

• The compilation starts from the main function (here int main())
• Then three 4 bits each memory space is created for the float data type (assuming to be 32/64 bit system)
• Then the compiler accepts input for the "length" and "breadth"
• Then the "areaOfTheRectangle" is calculated by the formula and the output the required value
• The program terminates at the "return 0" statement but returning 0 in the output screen as int main requires a return type.

You can see the above code execution and output in codeblocks IDE: