C++ Area of a Rectangle

#include <iostream>
using namespace std;

// Function to calculate the area of a rectangle
float calculateArea(float length, float width) {
    float area = length * width;
    return area;
}

int main() {
    float length, width, area;

    // Input length and width of the rectangle
    cout << "Enter length of the rectangle: ";
    cin >> length;
    cout << "Enter width of the rectangle: ";
    cin >> width;

    // Calculate the area by calling the function
    area = calculateArea(length, width);

    // Display the calculated area
    cout << "Area of the rectangle is: " << area;

    return 0;
}

Explanation:

#include <iostream>: Includes the input/output stream library to enable standard input and output operations.
using namespace std;: Allows the usage of names for objects and variables from the standard C++ library.
float calculateArea(float length, float width) { ... }: Defines a function named calculateArea that takes the length and width of a rectangle as parameters and returns the calculated area.
float area = length * width; return area;: Calculates the area of the rectangle by multiplying its length and width, then returns the result.
int main() { ... }: Defines the main function where the program's execution begins.
float length, width, area;: Declares variables length, width, and area to store user input and the calculated area.
cout << "Enter length of the rectangle: ";: Displays a message prompting the user to enter the length of the rectangle.
cin >> length;: Reads the user input for the length of the rectangle.
cout << "Enter width of the rectangle: ";: Displays a message prompting the user to enter the width of the rectangle.
cin >> width;: Reads the user input for the width of the rectangle.
area = calculateArea(length, width);: Calls the calculateArea function with the provided length and width values and stores the returned area in the area variable.
cout << "Area of the rectangle is: " << area;: Displays the calculated area of the rectangle to the user.