How to correctly implement random decimals?

This is a discussion on How to correctly implement random decimals? within the C++ Programming forums, part of the General Programming Boards category; I've been experimenting with this method for the last five minutes and it hasn't properly produced what exactly I want. ...

  1. #1
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    How to correctly implement random decimals?

    I've been experimenting with this method for the last five minutes and it hasn't properly produced what exactly I want. I want a program that outputs 10 random decimal numbers. All of the decimal numbers should be lower than 2.00, meaning, that some of the numbers that actually get placed on screen(output) should be like:

    1.91
    0.19
    0.45
    etc.

    Well, enough talking. Let me paste what I've done. I hope the next person that post can come up with a quick, peaceful(not bashful) solution.

    Code:
    #include <iostream>
    #include <stdlib.h>
    #include <time.h>
    
    int main()
    {
     double number;
    
     for(int i=0; i<=10; i++)
    {
     number= (rand() % 1) + ( (rand() % 99) * 0.10);
     cout << number << endl;
    }
    
     cin.get();
     return 0;
    }
    Last edited by ZooTrigger1191; 02-16-2003 at 09:56 PM.

  2. #2
    RoD
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    >>decimal integers

    an integer is a whole number, can't be decimal, thats a double or float.

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    Some advice to future responders. If you have some minor to say just PM me. The whole point of me posting this topic is to get this problem resolve. Not to better my english.

    Note: I was in a rush when I was typing that. Notice how I edit my post like 2 times already.

  4. #4
    samurai warrior nextus's Avatar
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    isnt it

    (rand () % (high - low + 1) ) + low;
    so if you use decimal...never tried..sorry cant compile right now i just reformat hard drive.....going to reinstall visual studio 6.0 ent in a few mins
    nextus, the samurai warrior

  5. #5
    RoD
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    Some advice to future responders. If you have some minor to say just PM me. The whole point of me posting this topic is to get this problem resolve. Not to better my english.
    note to authors...don't wanna hear it, don't post it.

  6. #6
    Cheesy Poofs! PJYelton's Avatar
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    Any number modulus one is zero. If you want 0 or 1 you need to modulus by 2. Also, if you modulus 99, then 99 will not be a possible answer. And last, if you multiply by .1 then your range is from .1 to 10 instead of .01 to 1. I think what you need is:

    number= (rand() % 2) + ( (rand() % 100) * 0.01);

    OR

    number=(rand()%200)*.01;

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