c program for the reverse the digits

Question

I am looking for the C program for reverse the digits like below:

If i enter:

123456

Then the result would

Answer 1

1. count the number of digits in number and store in count variable
2. extract individual digits in variable

3. use the power function.

   while(count>=1)
   {
     var = num % 10;
     sum = sum + var * pow(10, count - 1);
     num =num / 10;
     count--;
   }