Example: Number Pyramid Pattern in C++

C
C++
C#
Java
Python
PHP
// Number Pyramid Pattern
#include <iostream>
#include <iomanip> // For setw

using namespace std;

int main() {
    // Step 1: Declare variable for number of rows
    int rows;

    // Step 2: Prompt user for input
    cout << "Enter the number of rows for the number pyramid: ";
    cin >> rows;

    // Step 3: Outer loop for rows
    for (int i = 1; i <= rows; ++i) {
        // Step 4: Inner loop to print leading spaces
        for (int j = 1; j <= rows - i; ++j) {
            cout << "  "; // Two spaces for alignment with numbers
        }

        // Step 5: Inner loop to print numbers in increasing order
        for (int k = 1; k <= i; ++k) {
            cout << k << " ";
        }

        // Step 6: Inner loop to print numbers in decreasing order
        for (int k = i - 1; k >= 1; --k) {
            cout << k << " ";
        }
        
        // Step 7: Move to the next line after each row
        cout << endl;
    }

    return 0;
}