Problem 6-2 Encode Your job is to design an app that encodes a string input by the user. The encoding is simple: you will add or subtract from the ASCII code for each symbol in the string by the number specified. The number can be either positive or negative. The form should look something like this: Text: HAL Text IBM Shitt 1 Shift -1 Encode Encode Encoded IBM Encoded HAL Hints: You may find the following useful in your program: For Next Loop Length property of a string Substring method for a string variable or literal Asc function Chr function VISUAL BASIC