doing loops and it keep returning 0

This is a discussion on doing loops and it keep returning 0 within the C++ Programming forums, part of the General Programming Boards category; I was doing while, do while, and I kept on getting 0 even when the num is greater than 10. ...

  1. #1
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    Feb 2012
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    doing loops and it keep returning 0

    I was doing while, do while, and I kept on getting 0 even when the num is greater than 10. If i want to state it to be false do I got to add an if statement so when I execute it , it will show that greater than 10 is false?



    Code:
    
    # include <iostream>
    
     using namespace std;
    
    int main()
    {
    
       int x;
       x=0;
       do {
           cout <<"Hello World";
    }
     while (x != 0);
    
     cin.get();
    
    
    }
    Last edited by abrofunky; 02-14-2012 at 08:18 PM. Reason: add code

  2. #2
    C++ Witch laserlight's Avatar
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    The code bbcode tags should be used like:
    [code]the entire code here[/code]
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  3. #3
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    Your code doesn't seem to reflect your question very well. In your question, you're talking about comparing num to 10. In your code, you're comparing x to 0.

  4. #4
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    yes, I messed up. Thanks!

  5. #5
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    Now I think I see what you're doing. You may have already fixed this, but just in case:

    Basically it looks like you're trying to print "Hello World" to the screen once, then take user input. If the user input is a number less than or equal to 10, do all this again. If it's more than 10, break out of the loop and kill the program.

    In that case, one of the problems that you're running into is that you're not getting the input inside the loop; you're only getting it once the loop has already terminated. Another issue is that it's not being assigned to x at all. Basically x is being initialized to 0, and then that never changes; that causes an infinite loop. Try the following code instead:

    Code:
    # include <iostream>
     
    using namespace std;
     
    int main()
    { 
       int x;
       do {
           cout <<"Hello World";
           cin >> x;
       }
       while (x <= 10);
       return 0;
    }
    Or if that's not what you were trying to do, maybe this is:

    Code:
    #include <iostream>
    
    using namespace std;
    
    int main()
    {
       for (int i = 0; i <=10; i++)
       {
          cout << "Hello World";
       }
       return 0;
    }
    Or if necessary take ideas from both of these and use it to adapt your code.

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