C++ Program to Find Area of Rectangle

In this program, we will learn how to find the area of a rectangle using C++ Programming language.

As we know, the area of a rectangle is the product of its length and its breadth.

• Area = Length x Breadth

So, without further ado, let’s begin this tutorial.

C++ Program to Find Area of Rectangle

// C++ Program to Find Area of Rectangle
#include <iostream>
using namespace std;

int main(){
    int length, breadth, area;
    
    // Asking for input
    cout << "Enter the length of the rectangle: ";
    cin >> length;
    cout << "Enter the breadth of the rectangle: ";
    cin >> breadth;
    
    // Calculating area
    area = length * breadth;
    
    // Display output
    cout << "Area of Rectangle: " << area;
    return 0;
}

Output

Enter the length of the rectangle: 5
Enter the breadth of the rectangle: 7
Area of Rectangle: 35

How Does This Program Work ?

    int length, breadth, area;

In this program, we have declared some int data type variables named length, breadth and area.

    // Asking for input
    cout << "Enter the length of the rectangle: ";
    cin >> length;
    cout << "Enter the breadth of the rectangle: ";
    cin >> breadth;

Then, the user is asked to enter the length and breadth of the rectangle.

    // Calculating area
    area = length * breadth;

We calculate area of the rectangle using the formula,

• Area = Length x Breadth

    // Display output
    cout << "Area of Rectangle: " << area;

Finally, the output is displayed on the screen using the cout statement.

C++ Program to Find Area of Rectangle Using Functions

// C++ Program to Find Area of Rectangle Using Functions
#include <iostream>
using namespace std;

int area_rect(int length, int breadth);

int main(){
    int length, breadth, area;
    
    // Asking for input
    cout << "Enter the length: ";
    cin >> length;
    cout << "Enter the breadth: ";
    cin >> breadth;
    
    // Calling out the function
    area = area_rect(length, breadth);
    
    // Displaying output
    cout << "Area of the rectangle: " << area;
    return 0;
}

int area_rect(int length, int breadth){
    return (length * breadth);
}

Output

Enter the length: 4
Enter the breadth: 6
Area of the rectangle: 24

int area_rect(int length, int breadth){
    return (length * breadth);
}

In this program, we have declared a custom function named area_rect which returns the area of the rectangle.

Conclusion

I hope after going through this post, you understand how to find the area of a rectangle using C++ Programming language.

If you have any doubt regarding the program, feel free to contact us in the comment section. We will be delighted to solve your query.

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• C++ Program to Find Smallest of N Numbers