#Storing user data

1 messages · Page 1 of 1 (latest)

dusty kettleBOT
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<@&987246399047479336> please have a look, thanks.

dusty kettleBOT
#

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lean dock
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Make the variable declarations above the while (true)

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Make use of delayed assignment

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can you paste the code in here ?

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follow the instructions of the bot

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` not '

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its next to your 1 key

dusty kettleBOT
#

Detected code, here are some useful tools:

lean dock
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good enough

# 
 import java.util.Scanner;

class HelloWorld {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);

        String catName = null;
        
        System.out.println("To Do List");
        while(true) {
            System.out.println("Choose what you want to do");
            System.out.println("1, Add category");
            System.out.println("2, Delete category");
            System.out.println("3, Add task");
            System.out.println("4, Delete task");
            System.out.println("5, Show categories/tasks");
            int choice = input.nextInt();
            input.nextLine();
        
        if (choice == 1) {
            System.out.println("Type the name of the topic");
            catName = input.nextLine();
        }
        else if (choice == 2 ) {
            System.out.println("What topic would you like to delete?");
            String delCat = input.nextLine();
        }
        else if (choice == 3) {
            System.out.println("What topic do you want to add a task into?");
            String catAddTask = input.nextLine();
            
        }
        else if (choice == 4) {
            System.out.println("What task do you want to delete?");
            String taskDel = input.nextLine();
        }
        
        }
}
}
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see how you can access catName in the other branches

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you need to check that it was assigned a value

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if (catName != null) {

}
else {

}

(depending on what you are going to do with that)

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no, you only put the type on the initial declaration

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everything after that is a reassignment

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yep

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the book in the link might be helpful

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at least for drilling in some early basics

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i know, and its cool when i can just use my book to answer questions

lean dock
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lift the variable declarations outside of the ifs

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and only assign values in the ifs

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  • handle what happens if they select options out of order
lean dock
#

let me trim it down then

# 
import java.util.Scanner;

class HelloWorld {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);

        String catName = null;
        
        System.out.println("To Do List");
        while(true) {
            System.out.println("Choose what you want to do");
            System.out.println("1, Give a cat name");
            System.out.println("2, Show cat name");
            int choice = input.nextInt();
            input.nextLine();
        
            if (choice == 1) {
                System.out.println("Name a cat");
                catName = input.nextLine();
            }
            else if (choice == 2 ) {
                if (catName == null) {
                    System.out.println("You have not named a cat yet");
                }
                else {
                    System.out.println("Cat is named " + catName);
                }
            }
        }
    }
}
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yep

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basically null means "does not have a value yet"

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and you can check for what you want to do if a value isn't assigned, reset the variables, etc

dusty kettleBOT
#

Detected code, here are some useful tools:

Formatted code 
import java.util.Scanner;

class HelloWorld {
  public static void main(String[] args) {
    Scanner input = new Scanner(System.in);
    String catName = null ;
    String delCat = null ;
    String catAddTask = null ;
    String tasldel = null ;
    System.out.println("To Do List");
    while (true) {
      System.out.println("Choose what you want to do");
      System.out.println("1, Add category");
      System.out.println("2, Delete category");
      System.out.println("3, Add task");
      System.out.println("4, Delete task");
      System.out.println("5, Show categories/tasks");
      int choice = input.nextInt();
      input.nextLine();
      if (choice == 1) {
        System.out.println("Type the name of the topic");
        catName = input.nextLine();
      }
      else if (choice == 2) {
        System.out.println("What topic would you like to delete?");
        delCat = input.nextLine();
      }
      else if (choice == 3) {
        System.out.println("What topic do you want to add a task into?");
        catAddTask = input.nextLine();
      }
      else if (choice == 4) {
        System.out.println("What task do you want to delete?");
        taskDel = input.nextLine();
      }
    }
  }
}
lean dock
#

well

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be careful

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here

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else if (choice == 4) {
            System.out.println("What task do you want to delete?");
             taskDel = input.nextLine();
        }
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you probably aren't going to use taskDel from other branches

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so its fine to just keep that variable scoped

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its only when you want to re-use the variable that it matters

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yep

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you'll figure it out

dusty kettleBOT
#

Detected code, here are some useful tools:

lean dock
#

I can go in VC in a bit

dusty kettleBOT
#

Detected code, here are some useful tools:

lean dock
#

okay @surreal sapphire

lean dock
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i think you should probably ask your brother for help

#

you should have enough of a start by now

dusty kettleBOT
#

Closed the thread due to inactivity.

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