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Thread: For Loops

  1. #1
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    Default For Loops

    Hi guys. Hope you are well. I'm particularly stuck on understanding for loops properly. I have this program which computes numbers to whatever power you want it to. There are two command line arguments, the first being the number and the second being the power:

     
    public class Power
    {
      public static void main(String [] args)
      {
        int number = Integer.parseInt(args[0]);
        int power = Integer.parseInt(args[1]);
        int answer = 0;
     
        for (int i = 0; i*i < power; i++)
          answer=number*power;
        System.out.println(answer);
     
      }
    }

    Can anyone help on correcting this problem and possibly explaining how the for loop works, because i'm so confused :S

    Kind regards

    Shyam


  2. #2
    Crazy Cat Lady KevinWorkman's Avatar
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    Default Re: For Loops

    Why don't you add a print statement inside the for loop? Print out each value, as well as answer's current value each iteration. Or better yet, step through it with a debugger.
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    Default Re: For Loops

    Nevermind, looks like I'm wasting my time here.

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    Default Re: For Loops

    Read books to learn how to use "for loop".....

    Try to manipulate your answer on book.
    Like i=0;i<power;i++
    Calculating :- answer=number*power; suppose number is 2 and power is 5
    for loop condition is satisfied
    answer= 2*5 (= 10); after this increment i=1;
    answer=10*5 (=50).....ans so on

    actual answer or For loop should be
    answer=(your number)(assign your number to answer);
    for(int i=1;i<power;i++)
    answer=answer*number;


    print answer ;

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