How to find out next character alphabetically?

Question

How we can find out the next character of the entered one. For example, if I entered the character \"b\" then how do I get the answer \"c\"?

Answer 1

need to just add 1 in character you get next character. It works on ASCII values.

Answer 2

Convert the character to a number, increment the number and then convert back.

But consider what will happen for "z" or "á" (Latin Small Leter A with Acute).

Answer 3

Perhaps the simplest way is a little function and an array of the 26 chars. Then you can decide what you want to return for 'z'.