Reverse a number in c++

In C++, we can use loop and arithmetic operators to reverse a number. We are
taking a number as input from the user and reversing it in our code.

Let's look at a simple C++ example of how to reverse a number.

#include<iostream>

int reverse(const int& num) {
	// take the last digit of num
	int reverse = num % 10;
	// remove last digit
	int temp = num / 10;	

	while (temp > 0) {
		// again take last digit from temp
		// and add this to right to reverse digits
		reverse = reverse * 10 + temp % 10;
		// ex- last digit = 8 and reverse is 1
		// 1 * 10 + 8 = 18
		
		// again remove last digit from temp
		temp = temp / 10;
	}
	return reverse;
}


int main() {
	int input;
	std::cin >> input;
	int rev = reverse(input);
	std::cout << "reverse number: " << rev << std::endl;
}