c语言怎么利用随机函数产生N个随机整数（20000以上）(好难。

#include 
#include 
#include 

int main(int argc, char ** argv) {
	
	void generate_random(int n);
	
	if (argc >= 1)
	    generate_random(atoi(argv[1]));

	return 1;
}

void generate_random(int n) {
	
	int i;
	srand(time(NULL));
	
	for (i = 0; i < n; i++) {
		
		int r = 20000 + rand();
		printf("%d\n", r);
	}
}

结果如下：

#include
#include
#include
#include

#define N 20000
struct Student
{
int score;
struct Student *next;
};

//创建单向键表,返回链表表头head
struct Student *CreatLink(struct Student *head ,int n)
{
int i;
struct Student *p1,*p2;
head=p1=(struct Student *)malloc(sizeof(struct Student));
if(p1 == NULL)
{
printf("Not enough memory to allocate buffer\n");
system("PAUSE");
exit(1); /* terminate program if out of memory */
}
p1->score = rand()%101;//产生随机值
p1->next=NULL;
for(i=2;i<=n;i++)
{
p2=p1;
p1=(struct Student *)malloc(sizeof(struct Student));
if(p1 == NULL)
{
printf("Not enough memory to allocate buffer\n");
system("PAUSE");
exit(1); /* terminate program if out of memory */
}
p1->score = rand()%101;
p1->next=NULL;//最近产生的节点下一节点指向空
p2->next=p1;
}
return head;
}

//显示循环链表的成员
void DisplayLink(struct Student *head)
{
struct Student *p;
p=head;
do
{
printf("%3d ", p->score);
p=p->next;
}while(p!=NULL); //p再次与head相等时，即所有成员都遍历完成
printf("\n\n");
}

//选择排序法排序链表
struct Student *SortLink(struct Student *head)
{
struct Student *head2=NULL,*p1,*p2,*p1lst,*p2lst,*q;
float MaxScore;

while(head!=NULL)
{
p2=p1=head;
MaxScore=head->score;
while(p1!=NULL)
{
if(p1->score > MaxScore)
{
MaxScore=p1->score;
p2lst=p1lst;
p2=p1;
}
p1lst=p1;
p1=p1->next;
}
if(p2==head)
{
head=head->next;
}
else
{
p2lst->next=p2->next;
}
if(head2==NULL)
{
head2=q=p2;
}
else
{
q->next=p2;
q=q->next;
}
}
q->next=NULL;
return head2;
}

int main(int argc, char *argv[])
{
struct Student *head;
srand((unsigned)time( NULL ));
head=CreatLink(head,N);
printf("The sorces random Generated :\n");
DisplayLink(head);
head=SortLink(head);
printf("After Sort The sorces are follows:\n");
DisplayLink(head);
free(head);
system("PAUSE");
return 0;
}

链表也是一种数据结构。