C++ Exercises: Print the area and perimeter of a rectangle

Last update on August 11 2025 12:58:20 (UTC/GMT +8 hours)

Area and Perimeter of Rectangle

Write a C++ program to print the area and perimeter of a rectangle.

Visual Presentation:

C++ Exercises: Print the area and perimeter of a rectangle

Sample Solution:

C++ Code :

#include <iostream> // Including the input-output stream header file
using namespace std; // Using the standard namespace

int main() // Start of the main function
{
    float ar, peri, width, height = 0; // Declaration of variables for area, perimeter, width, and height with initialization
    cout << "\n\n Print the area and perimeter of a rectangle:\n"; // Outputting a message indicating the purpose of the program
    cout << "----------------------------------------------\n";
    cout << " Input the width of the rectangle: "; // Prompting the user to input the width of the rectangle
    cin >> width; // Taking user input for the width of the rectangle
    cout << " Input the height of the rectangle: "; // Prompting the user to input the height of the rectangle
    cin >> height; // Taking user input for the height of the rectangle

    peri = 2 * (width + height); // Calculating the perimeter of the rectangle
    ar = height * width; // Calculating the area of the rectangle

    cout << "The area of the rectangle is: " << ar << "\n"; // Outputting the calculated area of the rectangle
    cout << "The perimeter of the rectangle is: " << peri << "\n"; // Outputting the calculated perimeter of the rectangle
}

Sample Output:

  Print the area and perimeter of a rectangle:                          
----------------------------------------------                         
 Input the width of the rectangle: 8.5                                 
 Input the height of the rectangle: 5.6                                
The area of the rectangle is: 47.6                                     
The perimeter of the rectangle is: 28.2

Flowchart:

For more Practice: Solve these Related Problems:

Write a C++ program that calculates the area and perimeter of a rectangle and then computes the ratio between them.
Write a C++ program to input the dimensions of a rectangle and then display the area and perimeter using formatted output.
Write a C++ program that reads rectangle dimensions, calculates area and perimeter, and then checks if it is a square.
Write a C++ program that uses functions to separately compute the area and perimeter of a rectangle and then prints both values.

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