Sponsored Content
Top Forums Programming generating 16 digit random number in C Post 302344628 by ajaysahoo on Monday 17th of August 2009 07:17:44 AM
Old 08-17-2009
thanks jim...
its generating 16 digit no, but could please tell me that how the nos can be generated in double format.

i tried using atof() , but did nt work.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

generating random numbers with hamming distance 4

Hi I want to genrate 10 random 32 bit binary numbers with hamming distance 4 and 8. 11010110010101010101010101010101 11010110010101010100010101010010 if we look carefully at these two binary numbers they differ at 4 places hence hamming distance 4. Now I want to genrate these numbers... (2 Replies)
Discussion started by: hack_tom
2 Replies

2. Shell Programming and Scripting

Generating random number within a specific range (0.5-1.5)

Hello, need a way to generate numbers within 0.5-1.5 range Has to be totally random: 0.6 1.1 0.8 1.5 0.6 and so on.... How to? (10 Replies)
Discussion started by: TehOne
10 Replies

3. Shell Programming and Scripting

Generating random numbers

Hi, I am having trouble with generating random numbers. can this be done with awk? So I have a file that looks like this: 23 30 24 40 26 34 So column1 is start and column2 is end. I want to generate 3 random #'s between start and stop: So the output will look like this: ... (9 Replies)
Discussion started by: phil_heath
9 Replies

4. Programming

C Help; generating a random number.

Im new to C, and Im having a hard time getting a random number. In bash, I would do something similar to the following to get a random number; #!/bin/bash seed1=$RANDOM seed2=$RANDOM seed3=$RANDOM SEED=`expr $seed1 * $seed2 / $seed3` echo ${SEED%.*} Now, in online examples... (4 Replies)
Discussion started by: trey85stang
4 Replies

5. Programming

Generating Random Number in Child Process using Fork

Hello All, I am stuck up in a program where the rand functions ends up giving all the same integers. Tried sleep, but the numbers turned out to be same... Can anyone help me out how to fix this issue ? I have called the srand once in the program, but I feel like when I call fork the child process... (5 Replies)
Discussion started by: manisum
5 Replies

6. Shell Programming and Scripting

Generate 16 digit positive random Numbers

Hi Unix Gurus, I have a requirement to generate positive random 16 and 13 digit numbers. Here is the script I have so far..... number=$RANDOM$RANDOM$RANDOM$RANDOM; let "number %= 10000000000000"; echo $number But sometimes it is generating negative numbers and also 15 digit... (8 Replies)
Discussion started by: scorpioraghu
8 Replies

7. Shell Programming and Scripting

Generating Random Number in certain range

Hi there I am trying to generate a random number between 40 and 70 using the shell here is my code so far and it keeps going above 70. all help much appreciated! comp=$(( RANDOM%70+40 )) echo $comp (4 Replies)
Discussion started by: faintingquiche
4 Replies

8. Shell Programming and Scripting

Random number generating script?

Having a hard time with this. Very new to scripting and linux. Spent all sunday trying to do this. Appreciate some help and maybe help breaking down what the syntax does. Create a Bash program. It should have the following properties • Creates a secret number between 1 and 100 i. The... (3 Replies)
Discussion started by: LINUXnoob15
3 Replies

9. Shell Programming and Scripting

Generating a Random String of 'n' length

Hi, How can I generate a string of random characters (alpha+numeric) of a particular length ? For e.g. for n=5, output = 'kasjf' n=10, output = 'hedbcd902k' Also, please let me know if random (valid) dates could also be generated. Thanks (7 Replies)
Discussion started by: rishigc
7 Replies

10. Shell Programming and Scripting

Generating a POSIX random number?

Hi Guys and gals... As you know I am getting to grips with POSIX and hit this stumbling block. Generating two random numbers 0 to 255 POSIXly. Speed in not important hence the 'sleep 1' command. I have done a demo that works, but it sure is ugly! Is there a better way? #!/bin/sh # Random... (12 Replies)
Discussion started by: wisecracker
12 Replies
ATOF(3) 						     Linux Programmer's Manual							   ATOF(3)

NAME
atof - convert a string to a double SYNOPSIS
#include <stdlib.h> double atof(const char *nptr); DESCRIPTION
The atof() function converts the initial portion of the string pointed to by nptr to double. The behavior is the same as strtod(nptr, NULL); except that atof() does not detect errors. RETURN VALUE
The converted value. ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7). +----------+---------------+----------------+ |Interface | Attribute | Value | +----------+---------------+----------------+ |atof() | Thread safety | MT-Safe locale | +----------+---------------+----------------+ CONFORMING TO
POSIX.1-2001, POSIX.1-2008, C89, C99, SVr4, 4.3BSD. SEE ALSO
atoi(3), atol(3), strfromd(3), strtod(3), strtol(3), strtoul(3) COLOPHON
This page is part of release 4.15 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/. GNU
2016-12-12 ATOF(3)
All times are GMT -4. The time now is 02:10 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy