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Apr 12th, 2007

Generating random numbers using VC6

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Hi , im trying to create a simple code that generate random numbers
Im having two problem ,
1. For some reason randomize() function does not work on VisualC++6
2. I didnt really got the idea on how to set the range of the numbers that will be generated using the rand() function ,. i just saw it in some example .

Here is the code:

C++ Syntax (Toggle Plain Text)
#include <stdio.h>
#include <stdlib.h>
int main()
{
 int i;
 randomize();
 for (i=0;i<10;i++)
  printf ("Number %d: %d\n",i+1,rand()%10+1);
 return 0;
}
#include <stdio.h>
#include <stdlib.h>
int main()
{
 int i;
 randomize();
 for (i=0;i<10;i++)
  printf ("Number %d: %d\n",i+1,rand()%10+1);
 return 0;
}

Last edited by RisTar; Apr 12th, 2007 at 8:24 am.

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RisTar

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Apr 12th, 2007

Re: Generating random numbers using VC6

hey,
i will like you to try this for C, i use VC6 but the program is C++ and i get my random numbers anytime i want....

first include this

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#include <cstdlib>
using std::rand;
#include <cstdlib>
using std::rand;

after that.. whenever you want to generate the random numbers,

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rand()%4
 
rand()%4

wil generate one of 0, 1, 2, 3;

now if you want the number to be in the range 1 to 4, just use the code

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1 + rand()%4;
 
1 + rand()%4;

now you will get number in the range 1,2,3,4;

note 1 is the smallest and 4 is the largest;

if you want to generate the numbers 2, 4, 6, 8...
its by doing the same but adding 2 instead

C++ Syntax (Toggle Plain Text)
 
2 + rand()%4;
 
2 + rand()%4;

Last edited by addicted; Apr 12th, 2007 at 11:46 am. Reason: the code was for c++

addicted

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Apr 12th, 2007

Re: Generating random numbers using VC6

Click to Expand / Collapse Quote originally posted by RisTar ...

1. For some reason randomize() function does not work on VisualC++6

That's because this is C++, not Basic. You 'randomize' using srand(time()); once at the start of the program. Be sure to include time.h

WaltP

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