intializing a variable to a random number 2

[ssmitty]

I want to initialize a variable to a random number...something like this...

int somevariable = (random number between 1 - one hundred)...
i dunno...

 

[Zyrenthian]

srand(time(null));

int val = rand()%100 + 1;


you need to include time.h and I think the other include is either stdlib or stdio

Matt

 

[ssmitty]

thanks.

 

[ssmitty]

oh wait, this gives me a random number, but it is the same everytime i run the program, is there one that changes the number each time i run the program?

 

[harveyzane]

http://www.cplusplus.com/ref/cstdlib/rand.html

'nuff said.

 

[xwb]

You could just use any value on the stack.

int val;
val = val % 100;

 

[Zyrenthian]

the line,

srand(time(null));

should take care of the repeating number problem.

Matt

 

[Leibnitz]

it could be useful to make a function that can generate random values for any number.

#include <time.h>
#include <stdlib.h>

Random( const int& ivalue )
{
	srand((unsigned)time( NULL ));

	if( ivalue == 0 )
	{
		return 0;
	}
	else 
	{
	    int random = rand() % ivalue;
	    return random;
	}
}