Create an Reverse a Number Program in C++ with Free Codes

Introduction – Reverse a Number

Reverse a number involves flipping its digits such that the digits appear in the opposite order. For Example, reversing the number “12345” results in “54321”. Implementing a program to reverse a number in C++ requires understanding a basic arithmetic operations and loops.

Project Codes

Here is the Project Codes,

#include <iostream>

int reverseNumber(int num) {
    int reversedNumber = 0;
    while (num != 0) {
        int lastDigit = num % 10;
        reversedNumber = reversedNumber * 10 + lastDigit;
        num /= 10;
    }
    return reversedNumber;
}

int main() {
    int number;
    std::cout << "Enter a number to reverse: ";
    std::cin >> number;

    int reversed = reverseNumber(number);

    std::cout << "Reversed number: " << reversed << std::endl;

    return 0;
}

Output

Input: If the user enters 12345.
Output: The program calculates and outputs 54321.