Reverse Number

#include <stdio.h>

int main()
{
    int num, rev = 0, rem; // declare variables
    printf("Enter a number: "); // prompt user for input
    scanf("%d", &num); // read input
    while (num > 0) // loop until num is zero
    {
        rem = num % 10; // get the last digit of num
        rev = rev * 10 + rem; // append the digit to rev
        num = num / 10; // remove the last digit of num
    }
    printf("Reversed number = %d\n", rev); // print the reversed number
    return 0;
}