(Reverse Digits) Write a function that takes an integer value and returns the number with its digits reversed. For example, given the number 7631, the function should return 1367.

Question

What will be an ideal response?

Answer 1

```
// Reverse the digits of a number.
#include
#include
using namespace std;

int reverseDigits( int ); // function prototype

int main()
{
int number; // input number

cout << "Enter a number between 1 and 9999: ";
cin >> number;

cout << "The number with its digits reversed is: ";

// find number with digits reversed
cout << reverseDigits( number ) << endl;
} // end main

// reverseDigits returns number obtained by reversing digits of n
int reverseDigits( int n )
{
int reverse = 0; // reversed number

// loop until zero
while ( n > 0 )
{
reverse *= 10; // shift digits in reverse left
reverse += n % 10; // add least-significant digit of n to reverse
n /= 10; // remove least-significant digit from n
} // end while

return reverse; // return reversed number
} // end function reverseDigits
```