C#•13mo ago

❔ how do i convert a char to an int

i tried a bunch of different methods and none worked

62 Replies

Angius•13mo ago

Just cast

MODiX•13mo ago

Angius

REPL Result: Success

(int)'a'

(int)'a'

Result: int

Compile: 322.110ms | Execution: 28.185ms | React with ❌ to remove this embed.

Angius•13mo ago

Unless you want to get 7 from '7', then

MODiX•13mo ago

Angius

REPL Result: Success

char.GetNumericValue('7')

char.GetNumericValue('7')

Result: double

Compile: 508.428ms | Execution: 37.904ms | React with ❌ to remove this embed.

AaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaOP•13mo ago

oh wait im stupid i dont need to just convert to int i need to delete the last value and then convert to int u know how?

Angius•13mo ago

What do you mean "delete the last value"?

AaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaOP•13mo ago

if the char is r i want to make it nothing convert it to int and then assign a value

Angius•13mo ago

what

AaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaOP•13mo ago

i want to make a char with the value r to an int with the value 1

Angius•13mo ago

But... the value of r is not 1

MODiX•13mo ago

Angius

REPL Result: Success

(int)'r'

(int)'r'

Result: int

Compile: 371.133ms | Execution: 24.331ms | React with ❌ to remove this embed.

Angius•13mo ago

It's 114

AaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaOP•13mo ago

i want to make a char that is r to 1 and an int oh wait wait im stupipd i think wait

Angius•13mo ago

I have no idea what you're saying Do you want to, like, create a dictionary of chars? A list of them so different chars are at different indexes?

AaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaOP•13mo ago

nvm dont mind that i was stupid but i ahve another question

Random random = new Random();

string R = "R";
string P = "P";
string S = "S";

Console.WriteLine("Enter R (Rock), P (Paper) Or S (Scissors)");
char PlayerChoiceChar = Char.Parse(Console.ReadLine());
int PlayerChoiceInt;

int ComputerChoice = random.Next(1, 4);


if (PlayerChoiceChar.Equals(R))
{
    PlayerChoiceInt = 1;
}

else if (PlayerChoiceChar.Equals(P))
{
    PlayerChoiceInt = 2;
}

else if (PlayerChoiceChar.Equals(S))
{
    PlayerChoiceInt = 3;
}


if (PlayerChoiceInt- == ComputerChoice)
{
    Console.WriteLine("Its A Draw!");
}

Random random = new Random();

string R = "R";
string P = "P";
string S = "S";

Console.WriteLine("Enter R (Rock), P (Paper) Or S (Scissors)");
char PlayerChoiceChar = Char.Parse(Console.ReadLine());
int PlayerChoiceInt;

int ComputerChoice = random.Next(1, 4);


if (PlayerChoiceChar.Equals(R))
{
    PlayerChoiceInt = 1;
}

else if (PlayerChoiceChar.Equals(P))
{
    PlayerChoiceInt = 2;
}

else if (PlayerChoiceChar.Equals(S))
{
    PlayerChoiceInt = 3;
}


if (PlayerChoiceInt- == ComputerChoice)
{
    Console.WriteLine("Its A Draw!");
}

how do i fix it the last if doesnt work

Angius•13mo ago

Why's that - there?

ZacharyPatten•13mo ago

you don't need to parse the console input into a char

AaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaOP•13mo ago

doesnt matter now and it doesnt work without it

ZacharyPatten•13mo ago

it does matter because it is in your code as you shared it currently

AaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaOP•13mo ago

oh its a mistake and it still doesnt work doesnt work without it

ZacharyPatten•13mo ago

then fix it 🙂

AaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaOP•13mo ago

bro i dont need to fix it because its not a problem if i just add the char.parse are you stupid @ZZZZZZZZZZZZZZZZZZZZZZZZZ do you know how to fix it? the last if

Angius•13mo ago

What's wrong with it?

AaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaOP•13mo ago

it says CS0165 Use of unassigned local variable 'PlayerChoiceInt'

Buddy•13mo ago

Don't be rude.

AaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaOP•13mo ago

but he is

Angius•13mo ago

Yeah, because what will PlayerChoiceInt be if PlayerChoiceChar is €?

AaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaOP•13mo ago

because its not a problem and if it is he didnt even told me how to fix it what?

Angius•13mo ago

Exactly what I said

AaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaOP•13mo ago

yea sorry i just dont understand that

Angius•13mo ago

What will PlayerChoiceInt be, if the input char isn't R, isn't P, and isn't S, but rather €? What will it be if the input is T?

AaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaOP•13mo ago

im gonna fix it later

ZacharyPatten•13mo ago

using System;

Console.Write("Enter R (Rock), P (Paper) Or S (Scissors): ");
string playerChoice = Console.ReadLine()!.Trim().ToUpper();
if (playerChoice == "R")
{
    Console.Write("You chose rock...");
}
else if (playerChoice == "P")
{
    Console.Write("You chose paper...");
}
else if (playerChoice == "S")
{
    Console.Write("You chose scissors...");
}
else
{
    Console.Write("Invalid Input...");
}

using System;

Console.Write("Enter R (Rock), P (Paper) Or S (Scissors): ");
string playerChoice = Console.ReadLine()!.Trim().ToUpper();
if (playerChoice == "R")
{
    Console.Write("You chose rock...");
}
else if (playerChoice == "P")
{
    Console.Write("You chose paper...");
}
else if (playerChoice == "S")
{
    Console.Write("You chose scissors...");
}
else
{
    Console.Write("Invalid Input...");
}

if you want you could simplify your code to this

Angius•13mo ago

But... that's why your last if doesn't work Do you want to fix it now? I thought you do But if not, then why ask?

AaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaOP•13mo ago

ok i fixed it now

Random random = new Random();

string R = "R";
string P = "P";
string S = "S";

Console.WriteLine("Enter R (Rock), P (Paper) Or S (Scissors)");
char PlayerChoiceChar = Char.Parse(Console.ReadLine());
int PlayerChoiceInt;

int ComputerChoice = random.Next(1, 4);


if (PlayerChoiceChar.Equals(R))
{
    PlayerChoiceInt = 1;
}

else if (PlayerChoiceChar.Equals(P))
{
    PlayerChoiceInt = 2;
}

else if (PlayerChoiceChar.Equals(S))
{
    PlayerChoiceInt = 3;
}

else
{
    Console.WriteLine("Value Of Char Has To Be Either R, P Or S");
}


if (PlayerChoiceInt == ComputerChoice)
{
    Console.WriteLine("Its A Draw!");
}

Random random = new Random();

string R = "R";
string P = "P";
string S = "S";

Console.WriteLine("Enter R (Rock), P (Paper) Or S (Scissors)");
char PlayerChoiceChar = Char.Parse(Console.ReadLine());
int PlayerChoiceInt;

int ComputerChoice = random.Next(1, 4);


if (PlayerChoiceChar.Equals(R))
{
    PlayerChoiceInt = 1;
}

else if (PlayerChoiceChar.Equals(P))
{
    PlayerChoiceInt = 2;
}

else if (PlayerChoiceChar.Equals(S))
{
    PlayerChoiceInt = 3;
}

else
{
    Console.WriteLine("Value Of Char Has To Be Either R, P Or S");
}


if (PlayerChoiceInt == ComputerChoice)
{
    Console.WriteLine("Its A Draw!");
}

Angius•13mo ago

You didn't PlayerChoiceInt will still be unassigned if the input is @

AaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaOP•13mo ago

yea i know it just ends the program and thats not a problem but all the other ifs dont work the else works fine but the first if and the 2 else ifs dont work either how do i check if the letter is r p or s

ZacharyPatten•13mo ago

please elaborate on what your current question is.

how do i check if the letter is r p or s

isn't clear what you are currently struggling with because you already have if statements doing that at this point you seem like you need to finish the rest of your if statements comparing the player and computer choices

AaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaOP•13mo ago

the if statement didnt work

Will•13mo ago

i don't even think this will compile, PlayerChoiceInt is being compared to something when it can be potentially unassigned

AaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaOP•13mo ago

nvm i fixed it i changed the strings R P and S to chars i just need to make PlayerChoiceInt public and i dont know how

ZacharyPatten•13mo ago

why would you say you need to make it public? what is giving you the impression that is your issue?

Will•13mo ago

you either need to assign it a default value, or make it a field which will give it a default value automatically

AaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaOP•13mo ago

wdym

ZacharyPatten•13mo ago

public is an access modifier. thus far the code you have shared is only top level statements. top level statements cannot include access modifiers

AaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaOP•13mo ago

just assign it to 0 or something? k

Denis•13mo ago

So much confusion in this thread

AaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaOP•13mo ago

yea i know i asked like 5 different questions but i got it the draw works now i need to make the other wins and losses

ZacharyPatten•13mo ago

and do you need help with those?

AaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaOP•13mo ago

maybe yea oh wait maybe not

Random random = new Random();

char R = 'R';
char P = 'P';
char S = 'S';

Console.WriteLine("Enter R (Rock), P (Paper) Or S (Scissors)");
char PlayerChoiceChar = Char.Parse(Console.ReadLine());
int PlayerChoiceInt = 0;

int ComputerChoice = random.Next(1, 4);


if (PlayerChoiceChar.Equals(R))
{
    PlayerChoiceInt = 1;
}

else if (PlayerChoiceChar.Equals(P))
{
    PlayerChoiceInt = 2;
}

else if (PlayerChoiceChar.Equals(S))
{
    PlayerChoiceInt = 3;
}

else
{
    Console.WriteLine("Value Of Char Has To Be Either R, P Or S");
}


if (PlayerChoiceInt == ComputerChoice)
{
    Console.WriteLine("Its A Draw!");
}

if (ComputerChoice == 1 &&  PlayerChoiceInt == 2)
{
    Console.WriteLine("You Won!");
}

if (ComputerChoice == 1 && PlayerChoiceInt == 3)
{
    Console.WriteLine("You Lost!");
}

if (ComputerChoice == 2 && PlayerChoiceInt == 1)
{
    Console.WriteLine("You Lost!");
}

if (ComputerChoice == 2 && PlayerChoiceInt == 3)
{
    Console.WriteLine("You Won!");
}

if (ComputerChoice == 3 && PlayerChoiceInt == 1)
{
    Console.WriteLine("You Lost");
}

if (ComputerChoice == 3 && PlayerChoiceInt == 2)
{
    Console.WriteLine("You Won!");
}

Random random = new Random();

char R = 'R';
char P = 'P';
char S = 'S';

Console.WriteLine("Enter R (Rock), P (Paper) Or S (Scissors)");
char PlayerChoiceChar = Char.Parse(Console.ReadLine());
int PlayerChoiceInt = 0;

int ComputerChoice = random.Next(1, 4);


if (PlayerChoiceChar.Equals(R))
{
    PlayerChoiceInt = 1;
}

else if (PlayerChoiceChar.Equals(P))
{
    PlayerChoiceInt = 2;
}

else if (PlayerChoiceChar.Equals(S))
{
    PlayerChoiceInt = 3;
}

else
{
    Console.WriteLine("Value Of Char Has To Be Either R, P Or S");
}


if (PlayerChoiceInt == ComputerChoice)
{
    Console.WriteLine("Its A Draw!");
}

if (ComputerChoice == 1 &&  PlayerChoiceInt == 2)
{
    Console.WriteLine("You Won!");
}

if (ComputerChoice == 1 && PlayerChoiceInt == 3)
{
    Console.WriteLine("You Lost!");
}

if (ComputerChoice == 2 && PlayerChoiceInt == 1)
{
    Console.WriteLine("You Lost!");
}

if (ComputerChoice == 2 && PlayerChoiceInt == 3)
{
    Console.WriteLine("You Won!");
}

if (ComputerChoice == 3 && PlayerChoiceInt == 1)
{
    Console.WriteLine("You Lost");
}

if (ComputerChoice == 3 && PlayerChoiceInt == 2)
{
    Console.WriteLine("You Won!");
}

i think its done

ZacharyPatten•13mo ago

else if ((PlayerChoiceInt is 1 && ComputerChoice is 3) ||
    (PlayerChoiceInt is 2 && ComputerChoice is 1) ||
    (PlayerChoiceInt is 3 && ComputerChoice is 2))
{
    Console.WriteLine("You win!");
}

else if ((PlayerChoiceInt is 1 && ComputerChoice is 3) ||
    (PlayerChoiceInt is 2 && ComputerChoice is 1) ||
    (PlayerChoiceInt is 3 && ComputerChoice is 2))
{
    Console.WriteLine("You win!");
}

you can reduce the size of that by a lot

AaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaOP•13mo ago

oh lol

ZacharyPatten•13mo ago

you can || multiple conditions together || is "or"

AaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaOP•13mo ago

ok thx

ZacharyPatten•13mo ago

also in general you should use else if instead of a bunch of if when appropriate also to help with your code's readability you can also do this:

const int Rock = 1;
const int Paper = 2;
const int Scissors = 3;

const int Rock = 1;
const int Paper = 2;
const int Scissors = 3;

and later do

else if ((PlayerChoiceInt is Rock && ComputerChoice is Scissors) ||
    (PlayerChoiceInt is Paper && ComputerChoice is Rock) ||
    (PlayerChoiceInt is Scissors && ComputerChoice is Paper))
{
    Console.WriteLine("You win!");
}

else if ((PlayerChoiceInt is Rock && ComputerChoice is Scissors) ||
    (PlayerChoiceInt is Paper && ComputerChoice is Rock) ||
    (PlayerChoiceInt is Scissors && ComputerChoice is Paper))
{
    Console.WriteLine("You win!");
}

that is much more readable than just using 1, 2, and 3

AaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaOP•13mo ago

thx for all the help bro and im sorry that i called you stupid

ZacharyPatten•13mo ago

just curious, what made you want to make a rock paper scissors app in console? 🙂

AaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaOP•13mo ago

oh i had homework and it was a challenge question

ZacharyPatten•13mo ago

if you liked that assignment, making console games is a great way to learn. you can make more games than just rock paper scissors. and there are plenty of examples on GitHub to help you out 😉

AaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaOP•13mo ago

ok thx ill check that out

ZacharyPatten•13mo ago

if you want a link to some just ask. regardless, good luck learning 🙂

Accord•13mo ago

Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

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❔ how do i convert a char to an int