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Thread: Please Help me to understand

  1. #1
    Junior Member
    Join Date
    Jan 2013
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    Post Please Help me to understand

    Can someone explain this code please
    I cant understand what will print out...

    Please note that i dont want to run it on a program, i would like to understand it.

    for (int x=13; x<20; x+=3){
    int z=x-8;
    for (int y=x; y>z; y-=2)
    System.out.print(y+" ");


  2. #2
    Super Moderator Norm's Avatar
    Join Date
    May 2010
    Eastern Florida
    Thanked 2,273 Times in 2,244 Posts

    Default Re: Please Help me to understand

    One help for you to see what the code does is for the code to be properly formatted.
    Also you should always use {}s with for loops and if statements to clearly show what statements are part of the loops and if statements.
    Also Please edit your post and wrap your code with
    to get highlighting and preserve formatting.

    First thing to do would be to compile and execute the code and see what it prints out.
    Execute the code, copy the output and pasted it here so we can see what the code does.

    It's a waste of time talking about what some code could do, when you can execute it and see what it really does.

    For more info, add a println that prints out the value of z after it is given a value.
    If you don't understand my answer, don't ignore it, ask a question.

  3. #3
    Join Date
    Sep 2012
    Thanked 14 Times in 14 Posts

    Default Re: Please Help me to understand

    With these unlikely pieces of code, the intention is to teach you to hand-trace.

    Make a table with all the variables and then run through the program manually.

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