random.h

2-3树的数据结构以及演示程序

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

#define RAN (float)(rand())/(float)(32766)

namespace Random {

int ranint(int n);
float random(void);
int ranint(int n1,int n2);
void randomize(void);

int randint(int n)         //随机整数
{
	return (int)((float)(rand())/(float)(32766)*n+1);
}

int randint(int n1,int n2) //随机范围整数
{
	return randint(n2-n1+1)+n1-1;
}

float random(void)         //随机数(0-1)
{
	return (float)(rand())/(float)(32766);
}

void Randomize(void)       //随机初始化
{
	long *seed,a=rand(),i;
	seed=&a;
	i=(long)(time(seed)&65535);
    for (;i>=0;i--)
		rand();
}

}