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Thread: math quiz program

  1. #1
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    Default math quiz program

    import java.io.*;
    import java.lang.*;
    import java.util.Random;
    import java.math.*;
     
     
     
    public class first{
        public static void main(String args[])throws IOException{
            BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
     
            System.out.println("Mathematical Operations Drill");
            System.out.println("1.Practice");
            System.out.println("2.Challenge");
            System.out.println();
            System.out.println("Enter choice:");
            int choice=Integer.parseInt(br.readLine());
            System.out.println("Number of items:");
            int items=Integer.parseInt(br.readLine());
     
            generator.rangen(items);
        }
     
     
    public static class generator extends first{
    public static void rangen(int items){
        Random rand = new Random();
    	for(int counter=1; counter<items;counter++)
            {
    	int x=1+rand.nextInt(100);
    	int y=1+rand.nextInt(100);
            int z=1+rand.nextInt(4);
            switch(z){
                case 1:System.out.println(+x+"+"+y+"=");break;
                case 2:System.out.println(+x+"-"+y+"=");break;
                case 3:System.out.println(+x+"*"+y+"=");break;
                case 4:System.out.println(+x+"/"+y+"=");break;
                }
            }
            }
    }
    }

    How can I store the user's answers into an array? pls help.


  2. #2
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    Default Re: math quiz program

    What type are the answers? Are they integers or Strings?

    Here is an example of creating a array of Strings and an array ing ints. Each of them can have five elements in them.
    [FONT="Courier New"]String[] strArray = new String[5];
    int[] intARray = new int[5][/FONT]
    Then, to add stuff to an array, you do this:
    [FONT="Courier New"]strArray[0] = "first";
    strArray[1] = "more stuff";[/FONT]
    Last edited by helloworld922; October 23rd, 2009 at 11:32 AM.

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