Reverse Function

#include <stdio.h>
#include <iostream>
#include <stack>
#include <stdlib.h>
#include <algorithm>
#include <vector>
using namespace std;

int reverse(int num)
{
    int temp = num;
    int sum = 0;
    while (temp)
    {
        sum*=10;
        sum += temp%10;
        temp/=10;
    }
    return sum;
};

int main()
{
    int y,x = 05;
    y = reverse(x);
    cout << y;

    return 0;

}