Iterating Over a String

Iterating over a string means accessing each character one by one. Since Go strings are stored as byte slices, iterating over them requires careful handling, especially for Unicode characters.

Go provides two main ways to iterate over a string:

1. Using a for loop with an index (works for ASCII characters).
2. Using the range keyword (recommended for Unicode characters).

Iterating Over a String Using a for Loop (Byte by Byte)

Since Go strings are internally stored as a sequence of bytes, a `for