random.c

C.Game.Programming.For.Dummies.原码

/*
 * Random number routines: rnd and seedrnd
 */

#include <stdlib.h>
#include <time.h>	//for the seedrnd() function

int rnd(int range);
void seedrnd(void);

/* Generate a random value */

int rnd(int range)
{
	int r;

	r=rand()%range;		//spit up random num.
	return(r);
}

/* Seed the randomizer */

void seedrnd(void)
{
	srand((unsigned)time(NULL));
}