Change input text at C#

Question

Is it possible to change the input text when you read a line with c#?

Answer 1

There's only one possible interpretation for this question in my mind, ie, "can a string be modified after it is read in from keyboard input or file", and the answer is: yes.

There's a caveat though: since strings are immutable (within the scope of C#, though other languages use the same concept), you aren't modifying the original string, but rather copying the string and returning a modified version of it.

Answer 2

I don't get the idea of changing input text clearly. Do you mean read it first and then change it, or is it something else?