hiii
could anyone help me as i am making a small project of a compiler
in c# (windows application)
i need to know how to write the function that split the string into tokens as i keep trying to make it and it always fire errors
note : i take my input from a richtextbox

Can you provide an example of what you have so far?
How are your tokens structured?

Typically, if you want to split a string using some character, you write something like:

strMyString.Split(';');

That will split the string on the ; character into an array of strings.

-Peter