✅ Cannot figure out what I am doing wrong.
I am currently taking classes for C#, and im kind of throwing things around with casts and things, in this I am not allowed to use an array to finish the assignment, could maybe put me in the right direction without giving me the correct awnser.
The comments to the side are just reminders for myself to go off of(so don't worry about them if they are wrong.)
82 Replies
Why are you trying to subtract
null from number...?
And you should have only one StringBuilder
Before the loopOkay first off, you can return the StringBuilder.ToString() directly ya know :)
oh idk actually i got a little annoyed so i through something in there, i knew that wouldn't work
You don’t need a result string
ahh okay
alright,ill try that
If you want to turn a number to a letter, you probably want to be adding to
'A' insteadAngius
REPL Result: Success
Result: <>f__AnonymousType0#1<char, char, char>
Compile: 403.041ms | Execution: 65.320ms | React with ❌ to remove this embed.
Hmmm, no. How you would go about this is like this. Each character has some numerical equivalent (I think Unicode or ASCII I forgor)
If you’re given a starter char
were woudl I apply this exactly? in the new SB?
What you would need to do is get its equivalent number in whatever system, then you add one to said number and add the char cast(can you do this?) to string builder in a loop
In the loop
How do I use the bot thingy, im not sure if something like (char)90 would work
That's how you generate consecutive characters
!e [code here]Thanks
yes but like new would throw a sythax no?
It was just for demonstration sake
since new does not exist yet, so im asking how to build that.
To show you how math on chars works
Moods
REPL Result: Success
Console Output
Compile: 588.636ms | Execution: 26.996ms | React with ❌ to remove this embed.
ahh okay
Okay yeah that’s how I’d go about it
Get the number from the starter, increment, char cast and append to your stringbuilder in a loop and return it
okay I tried that, but it was throughing an error for me fo some reason saying I can not convert a char to an int.
ill try it again, maybe i spelled it wrong
Tbf, I converted an int to a char, and im surprised that even worked…
Why?
Chars are integers
Like, literally
Ehh I wasn’t too certain I’ve tried it out before but I wasn’t 100% it’d work
waiti i just noticed that says a, how does that work? is that because 97 = a and visual studio just knows that or something?
Moods
REPL Result: Failure
Exception: CompilationErrorException
Compile: 539.812ms | Execution: 0.000ms | React with ❌ to remove this embed.
cause a is not to anything, im lost on that.
My quotes got 
lol
It's because of how char is implemented in C#
A char is a wrapper around
int, basically
It's a number the character has on the ASCII tablealright, so char variable = cast of char to its number... hmm
Ok I confirmed 97 is the ascii code for ‘a’
Angius
REPL Result: Success
Result: string
Compile: 581.362ms | Execution: 65.243ms | React with ❌ to remove this embed.
There’s still ‘A’ too but the gist is characters are numbers
You’d just have to increase by one and cast and append in the loop
Also banning arrays is a weird restriction
is it?
Idk, an array isn't necessary there
there is no array needed here
or any collections at all
okay but to set it up, now i have my variables but how to allow it to be sit that 65('A') can be stringed with 122('z')?
It would just be a mostly useless intermediary step if anything
I mean they’re using stringbuilder so I don’t really see the point
cause i need to get like that kind of range
which is what im lost on
You have the
StringBuilder there, no?You have the starter. You know how to do math on chars. You have the number.
Combine the above and you're good
so i++ can count up, also yes I have StringBuilder but my teacher told me that would be good to use, i sadly do not know how it works.
stringbuilder builds strings
Angius
REPL Result: Success
Result: string
Compile: 554.971ms | Execution: 51.162ms | React with ❌ to remove this embed.
you create it, append to it, then
ToString to get the resultYou just need to know the methods, but the basics is it’s a way to have a mutable representation of a string
You really just need Append and ToString
You could also not use a stringbuilder ¯\_(ツ)_/¯
okay imma take a nother ss, tell me if i set this up right alright?
Angius
REPL Result: Success
Result: string
Compile: 496.988ms | Execution: 60.908ms | React with ❌ to remove this embed.
You mean like adding to an empty string instead?
lgtm
As demonstrated, yes
do what lol?
Wouldn’t that be slower than appending in this scenario? Or maybe since we know its range it doesn’t matter
Looks Good To Me
oh okay
It would be slower, yes, since each
+= would allocate a new stringso with the appeal how would i set that up?
But does it matter in this case?
Yeah fair enough it wouldn’t matter in this scenario
I'd say it's time you try some stuff out and see if you can figure it out
okay, sounds like a plan
If you get stuck again, come back and we'll take a look
alright, thank you guys
im so still really confused on where im going with this.
so i desided ot but an enumerial rage, from null to del, or 0, 127, but what to put into the appeal still has me very lost, is it going to be some kind of parameter, variable or a method, i wouldn't think a method since my method is string. But I can't find any referecnes online, they only give me arrays.
???
Nothing in that message makes sense
Do you know what a loop is in programming?
I made a enumerable range, setting it form 0, 127, thats the same as null to del correct? And as well as that, i looked on the internet for a reference of appends and i got nothing.
You don't need to range anything
"null to del" ???
what
Your task is very straight forward, You're given a starter character
you should just generate an
N long string based on that starter
dont worry about null, del, Enumerable.Range...okay...
so bakc to my question, do you know what a loop is?
Yes, it continues to count up or down one + at time, starting at your first part in your for() the int i = (where you start) ((forgot the name of what its called)) and goes until the i < the item you need to finish with, and the will count up or down depending on if you ++ or -- your index.
okay, thats more or less accurate
its a bit more flexible than that, but it works for this exercise
Look at this:
!e Console.WriteLine((char)('A'+1));
Pobiega
REPL Result: Success
Console Output
Compile: 461.113ms | Execution: 23.128ms | React with ❌ to remove this embed.
so given A, we can easily get B
and so forth
okay so since 'A' is my starting value, i will plus it by 126 to get lowercase z?
why are you trying to get lowercase z?
and your starter isnt fixed, its given by a method parameter
thats my end value, thats why im trying to do it. okay my logic is really off, its really hard to explain because i don' t understand how to write it.
You should re-read the description
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