顺序表的操作（初始化，修改，插入，删除）（求差集）

#include <bits/stdc++.h>
#define LIST_INIT_SIZE 100
#define LISTINCREMENT 10
#define  OK 1
#define  ERROR 0
#define  FALSE 0
#define  TRUE 1
typedef int Status;
typedef int Bool;
typedef int ElemType;
using namespace std;
typedef struct
{
    int *elem;
    int length;
    int listsize;
}SqList;
Status InitList_Sq(SqList &L)
{
    L.elem=(int *)malloc(LIST_INIT_SIZE *sizeof (int));
    if(!L.elem) exit(-2);
    L.length=0;
    L.listsize=LIST_INIT_SIZE;
    return OK;
}
Status xiugai(SqList &L,int i,int e)
{
    if(i<1||i>L.length+1)
        return 0;
    L.elem[i]=e;
}
Status ListInsert_Sq(SqList &L,int i,int e)
{
    ElemType *newbase,*q,*p;
    if(i<1||i>L.length+1)
        return 0;
    if(L.length>=L.listsize)
    {
        newbase = (ElemType *)realloc(L.elem,(L.listsize+LISTINCREMENT)*sizeof (ElemType));
        if (!newbase)
        {
            printf("OVERFLOW"); // 存储分配失败
            return ERROR;
        }
        L.elem = newbase;// 新基址
        L.listsize += LISTINCREMENT; // 增加存储容量
    }
    q = &(L.elem[i-1]);
    for (p = &(L.elem[L.length-1]); p >= q;  --p)
            *(p+1) = *p;
    *q = e;
    ++L.length;
    return OK;
}
Status ListDelete_Sq(SqList &L,int i)
{
    ElemType *p,*q;
    if (( i < 1) || ( i > L.length))
        return ERROR;
    p = &(L.elem[i-1]);
    q = L.elem+L.length-1;
    for (++p; p <= q; ++p)
        *(p-1) = *p;
    L.length--;
    return OK;
}
void sortList_Sq(SqList &L)
{
    int len=L.length;
    for(int i=0;i<len;i++)
    {
        for(int j=i+1;j<len;j++)
        {
            if(L.elem[i]>=L.elem[j])
            {
                int t=L.elem[i];
                L.elem[i]=L.elem[j];
                L.elem[j]=t;
            }
        }
    }
}
void MergeList_Sq(SqList La, SqList Lb, SqList &Lc)
{
    InitList_Sq(Lc);
    int i=1,j=1,k = 0,La_len,Lb_len,ai,bj;
    La_len = La.length;
    Lb_len = Lb.length;
    while ((i <= La_len) && (j <= Lb_len))
    {
        ai=La.elem[i];
        bj=Lb.elem[j];
        if (ai <= bj)
            ListInsert_Sq(Lc, ++k, ai),++i;
        else
            ListInsert_Sq(Lc, ++k, bj),++j;
    }
    while (i <= La_len)
    {
        xiugai(La, i++, ai);
        ListInsert_Sq(Lc, ++k, ai);
    }
    while (j <= Lb_len)
    {
        xiugai(Lb, j++, bj);
        ListInsert_Sq(Lc, ++k, bj);
    }
}
void chaji(SqList La,SqList Lb,SqList &Lc)
{
    int len1= La.length,len2=Lb.length;
    int i=0,j=0,k=1;
    while(i<len1&&j<len2)
    {
        if(La.elem[i]<Lb.elem[j])
        {
            ListInsert_Sq(Lc,k++,La.elem[i]);
            i++;
        }
        else if(La.elem[i]>Lb.elem[j])
            j++;
        else i++,j++;
    }
    while(i<len1)
    {
        ListInsert_Sq(Lc,k++,La.elem[i]);
        i++;
    }
}
int main()
{
    SqList L,P,U,N,C;
    InitList_Sq(L);
    InitList_Sq(P);
    InitList_Sq(C);
    for(int i=1;i<=5;i++)
    {
        ListInsert_Sq(L,i,i);
        cout<<L.elem[i-1]<<' ';
    }
    cout<<endl;
    for(int i=1;i<=5;i++)
    {
        ListInsert_Sq(P,i,i+3);
        cout<<P.elem[i-1]<<' ';
    }
    cout<<endl;
    sortList_Sq(L);
    sortList_Sq(P);
    chaji(L,P,C);
    int len=C.length;
    for(int i=0;i<len;i++)
        cout<<C.elem[i]<<' ';
    cout<<endl;
    return 0;
}