How to get a portion of a string
===

>> How to get a portion of a string.

>> For Example, the string is:

>> Input String: "53 56 4B 00 00 41 41 2F 41 54 43 43 54 52 31 2E 41 54 31 2E 4E 37 38"

>>                    |                                        |
                  ptr1                                     ptr2  

>> ptr1= Its always going to be at the 7th position starting from left to right
ptr2= Its always going to be at the 13th position starting from right to left

>>Output string:
4B 00 00 41 41 2F 41 54 43 43 54 52 31 2E 41 54 31