C language implementation of the Line table

#include <stdio.h>

#include <stdlib.h>

#define LIST_INIT_SIZE 100

#define List_increment 10

#define Status INT

typedef int ELEMTYPE;

typedef struct{

Elemtype *elem;

int length;

int listsize;

}sqlist;

Status initlist (sqlist &l) {

l.elem= (Elemtype *) malloc (list_init_size * sizeof (elemtype));

if (! L.elem) exit (1);

l.length=0;

L.listsize=list_init_size;

return 1;

}

Status destory (sqlist &l) {

Free (L.elem);

return 1;

}

Status clearlist (sqlist &l) {

L.elem=null;

l.length=0;

return 1;

}

Status islistempty (sqlist &l) {

if (l.length=0) return 1;

else return 0;

}

Status listlength (sqlist &l) {

return l.length;

}

Status Getelem (sqlist &l,int i,elemtype &e) {

if (i>=1&&i<=l.length) {

E=L.ELEM[I-1];

return 1;

}

Else

return 0;

}

Returns the position of the first element that is the same as E, does not exist return 0

Status Locateelem (sqlist &l,elemtype e) {

for (int i=0;i<l.length;i++) {

if (l.elem[i]==e)

return (I+1);

}

return 0;

}

Status Prioelem (sqlist &l,elemtype cur_e,elemtype &pre_e) {

for (int i=1;i<l.length;i++) {

if (l.elem[i]==cur_e) {

PRE_E=L.ELEM[I-1];

return 1;

}

}

return 0;

}

Status Nextelem (sqlist &l,elemtype cur_e,elemtype &next_e) {

for (int i=0;i<l.length-1;i++) {

if (l.elem[i]==cur_e) {

NEXT_E=L.ELEM[I+1];

return 1;

}

}

return 0;

}

Status Listinsert (sqlist &l,int i,elemtype e) {

Elemtype *p,*q;

if (i<1| | I>L.LENGTH+1) return 0;

if (l.length>=l.listsize) {

l.elem= (Elemtype *) realloc (L.elem, (l.listsize+list_increment) *sizeof (elemtype));

L.listsize+=list_increment;

}

q=& (L.elem[i-1]);

For (p=& (l.elem[l.length-1]);p >=q;p--) * (p+1) =*p;

*q=e;

l.length++;

return 1;

}

Status printlist (sqlist &l) {

for (int i=0;i<l.length;i++)

printf ("%d\n", L.elem[i]);

return 1;

}

int main () {

SqList l;

Initlist (l);

Elemtype E1,e2,e3,e4,e5;

e1=e2=e3=e4=e5=100;

Listinsert (L,1,E1);

Listinsert (L,2,E2);

Listinsert (L,3,E3);

Listinsert (L,4,E4);

Listinsert (L,5,E5);

Printlist (l);

return 0;

}

Pure Novice mistake please point out

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C language implementation of the Line table