Example: Rhombus Pattern Printer in C++

// Rhombus Pattern Printer
#include <iostream>
using namespace std;

int main() {
    // Step 1: Declare a variable for the rhombus side length
    int side_length;

    // Step 2: Prompt the user to enter the side length
    cout << "Enter the side length of the rhombus: ";
    cin >> side_length;

    // Step 3: Outer loop for rows
    // This loop iterates from the first row (i=1) up to the specified side_length.
    for (int i = 1; i <= side_length; ++i) {
        // Step 4: Inner loop to print leading spaces
        // The number of spaces decreases with each row to create the diagonal shift.
        // For the first row (i=1), side_length - 1 spaces are printed.
        // For the last row (i=side_length), 0 spaces are printed.
        for (int j = 1; j <= side_length - i; ++j) {
            cout << " ";
        }

        // Step 5: Inner loop to print stars
        // The number of stars remains constant for a parallelogram-style rhombus.
        // It prints 'side_length' number of stars in each row.
        for (int k = 1; k <= side_length; ++k) {
            cout << "*";
        }

        // Step 6: Move to the next line after each row is complete
        cout << endl;
    }

    return 0;
}