Reverse String

Create a function string reverse$($string$)$ that accepts a string parameter and returns the reverse of that string.

For example, reverse$("$string$")$ will return "gnirts".

Write a main function that calls the function

Original: program

Reversed: margorp

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im having some issues with this problem. im not allowed to use bits$/$stdc$++.$h$,$ algorithm, string, or cstring library function. im not sure what else to do$.$