Thread: Problem with random number generation

  1. #1
    Registered User
    Join Date
    Sep 2005

    Problem with random number generation


    I wrote this program to generate 256 random numbers. The numbers change each time the code is excuted. But I can't seem to limit the numbers from 1 to -1. Antother thing I can't seem to do is that I want the numbers to go up to 2 decimal placec. i.e. 1.11. I will be highly obliged if someone can point me inthe right direction.

    #include <stdio.h>
    #include <stdlib.h>
    #include <time.h>
    int main()
        float i,a;
        /* Set evil seed (initial seed) */
        srand( (unsigned)time( NULL ) );
        for (i = 0; i < 256; i++) 
        return 0;

  2. #2
    Just Lurking Dave_Sinkula's Avatar
    Join Date
    Oct 2002
    a = rand() / (RAND_MAX / 2.0F) - 1;
    7. It is easier to write an incorrect program than understand a correct one.
    40. There are two ways to write error-free programs; only the third one works.*

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