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Computer Science

Cool goIITian

Joined:	14 Apr 2008
Post:	55

22 Apr 2008 21:58:50 IST

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442

C++

None

How to use randomizer funtion to generate random nos?

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Sagar Vaze

Blazing goIITian

Joined: 11 Apr 2008

Posts: 315

23 Apr 2008 17:45:41 IST

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use rand function like

int a=rand()

to get numbers in a range say 0 to 9

int a=rand() % 10

you need cstdlib for this

Selva Ganesh

Hot goIITian

Joined: 21 Feb 2007

Posts: 165

23 Apr 2008 22:21:22 IST

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int x = rand(n);

the above function generates a random number from
0 to (n-1)

The function is defined under "stdlib.h"

Suresh Kumar

Forum Expert

Joined: 24 Aug 2009

Posts: 1342

23 Sep 2009 21:36:54 IST

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hello dear

The C++ standard library includes a pseudo random number generator for generating random numbers. In order to use it we need to include the <cstdlib> header. To generate a random number we use the rand() function.

here i will generate a single random number:

#include <cstdlib>

#include <iostream>

using namespace std;

int main()

{

int random_integer = rand();

cout << random_integer << endl;

}

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