怎么構(gòu)造一個(gè)空的線性表？

#include<stdio.h>

#define MAXSIZE 100

struct List

{

int L[MAXSIZE];

int top;

};

int Init()//top指針初始化為0

{

int top;

top=0;

return top;

}

void Input(struct List *t,int p,int n)//輸入n個(gè)數(shù)據(jù)

{

if(n==0||n>=MAXSIZE)printf("空隊(duì)列\(zhòng)n");

else

for(p=0;p<n;p++)

scanf("%d",&t->L[p]);

}

void Output(struct List *s,int i,int m)//輸出m(=n)個(gè)數(shù)據(jù)哈

{

if(m==0||m>=MAXSIZE)printf("無(wú)法輸出\n");

else

for(i=0;i<m;i++)

printf("%d ",s->L[i]);

}

void main()

{

struct List r;

int n,m;

scanf("%d",&n);

m=Init();

Input(&r,m,n);

Output(&r,0,n);

}