Thread: How to generate random numbers between 0 to 7 using a function that generates 0 to 3

  1. 05-30-2012 #1
    Ben Frankliner
    Ben Frankliner is offline
    Registered User
    Join Date
    May 2012
    Posts
    2

    Question How to generate random numbers between 0 to 7 using a function that generates 0 to 3

    My line of thought is to use Left shift of bits. Maybe call the function twice.

    What would be the most efficient way?
  2. 05-30-2012 #2
    laserlight
    laserlight is offline
    C++ Witch laserlight's Avatar
    Join Date
    Oct 2003
    Location
    Singapore
    Posts
    28,413
    Quote Originally Posted by Ben Frankliner
    My line of thought is to use Left shift of bits. Maybe call the function twice.
    I think you're headed in a right direction.
    Quote Originally Posted by Bjarne Stroustrup (2000-10-14)
    I get maybe two dozen requests for help with some sort of programming or design problem every day. Most have more sense than to send me hundreds of lines of code. If they do, I ask them to find the smallest example that exhibits the problem and send me that. Mostly, they then find the error themselves. "Finding the smallest program that demonstrates the error" is a powerful debugging tool.
    Look up a C++ Reference and learn How To Ask Questions The Smart Way
  3. 05-31-2012 #3
    iMalc
    iMalc is offline
    Algorithm Dissector iMalc's Avatar
    Join Date
    Dec 2005
    Location
    New Zealand
    Posts
    6,318
    Maybe throw in an xor there too...
    My homepage
    Advice: Take only as directed - If symptoms persist, please see your debugger

    Linus Torvalds: "But it clearly is the only right way. The fact that everybody else does it some other way only means that they are wrong"
« Previous Thread | Next Thread »
Popular pages Recent additions subscribe to a feed

Similar Threads

  1. Function that generates random BST?
    By Makara in forum C Programming
    Replies: 6
    Last Post: 03-30-2012, 10:47 PM
  2. the algorithm used in c++ to generate random numbers
    By karim tarbali in forum C++ Programming
    Replies: 7
    Last Post: 02-17-2012, 08:01 AM
  3. Problem with function that generates random numbers
    By stdq in forum C Programming
    Replies: 4
    Last Post: 01-25-2012, 07:24 PM
  4. How to generate random numbers the same everytime
    By lehe in forum C++ Programming
    Replies: 11
    Last Post: 04-09-2009, 06:00 PM
  5. How to generate random numbers between 65 and 75
    By chottachatri in forum C Programming
    Replies: 19
    Last Post: 03-02-2008, 06:24 PM