C++ Program to reverse an integer number using for

Program

#include<iostream>
using namespace std;
int reverseInt(int num)
{
    int i,remainder,rev=0; 
    for(i=num;i>0; )
    {
        remainder=i%10;
        rev=rev*10+remainder;
        i=i/10;
    }
    return rev;
}
int main()
{
    int num;      
    cout << "Enter an Integer: ";
    cin >> num;
    cout << "Reversed number: " << reverseInt(num);  
    return 0;  
}

Output

$ g++ reverse-integer-number-using-for.cpp
$ ./a.out
Enter an Integer: 789124
Reversed number: 421987