There are no attributes on the picture. Do you mean fields? Also, a class function is usually called a method

yeah thats what i meant

well methods are in effect just functions that take an extra hidden parameter

the this parameter

it's a reference to an object with your fields effectively

you could say this.F_name in your function for clarity, if you were wondering how that works

alright

so what's your problem anyway?

it just keeps looping

ill enter an upper case first name and last name but it keeps asking for it

or a string where the first character is uppercase

what's 1 in Char.IsUpper?

the first character of the string

oh wait

indices are usually treated as offsets rather than positions

i see what ive done

so the first character is at offset 0

it should be 0 to check the first character

yeah

cheers

np

how do i get rid of the green underlines

it keeps saying that it could be null

check for null before assigning it

or make the fields nullable

thats just putting ? infront of them right

yes, after the type

string?

readline may return null

an empty string too

it works now so does it really matter?

it would throw an exception if you enter an empty string

or pipe from a file