Example: Decimal to Binary Conversion (Iterative) in C++

// Decimal to Binary Conversion (Iterative)
#include <iostream>
#include <string>
#include <algorithm> // Required for std::reverse

int main() {
    // Step 1: Declare variables
    int decimalNum;
    std::string binaryString = "";

    // Step 2: Prompt user for input
    std::cout << "Enter a positive decimal number: ";
    std::cin >> decimalNum;

    // Step 3: Handle the special case of 0
    if (decimalNum == 0) {
        binaryString = "0";
    } else {
        // Step 4: Perform conversion using modulo and division
        while (decimalNum > 0) {
            int remainder = decimalNum % 2; // Get the remainder
            binaryString += std::to_string(remainder); // Convert remainder to string and append
            decimalNum /= 2; // Divide the number by 2
        }
        // Step 5: Reverse the binary string as remainders are collected in reverse order
        std::reverse(binaryString.begin(), binaryString.end());
    }

    // Step 6: Display the result
    std::cout << "Binary equivalent: " << binaryString << std::endl;

    return 0;
}