C program to find reverse of a number

Example

Input

Input number: 12345

Output

Reverse of 12345 = 54321

/**
 * C program to find reverse of a number
 */

#include <stdio.h>

int main()
{
    int num, reverse = 0;

    /* Input a number from user */
    printf("Enter any number to find reverse: ");
    scanf("%d", &num);

    /* Repeat the till 'num' becomes 0 */
    while(num != 0)
    {
        /* 
         * Increase place value of reverse and 
         * add last digit to reverse 
         */
        reverse = (reverse * 10) + (num % 10);

        /* Remove last digit from 'num' */
        num /= 10;
    }

    printf("Reverse = %d", reverse);

    return 0;
}

/*
Output :

Enter any number to find reverse: 12345
Reverse = 54321
*/