C++順序存儲的線性表的代碼

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#include <stdio.h>

#define OK 1
#define ERR 0

#define LIST_INIT_SIZE 100
#define LIST_INCREMENT 10
#define ElemType char

typedef struct {
} SqList;

{
    if(NULL == aList->elem)return ERR;
    aList->listSize = LIST_INIT_SIZE;
    aList->length = 0;
    return OK;
}

{
    int i;
    if( index<0 || index>aList->length ){
        printf("Error : Insert %c to wrong position %dn",e,index);
    }
    if( aList->listSize <= aList->length )
    {
        if(NULL == aList->elem) return ERR;
        aList->listSize += LIST_INCREMENT;
    }

    printf("Insert %c to position %dn",e,index );
    i = aList->length;
    while(i>index)
    {
        aList->elem[i] = aList->elem[i-1];
        i--;
    }

    aList->elem[index] = e;
    aList->length++;

    return OK;
}

{
    int i = index;
    if(i<0 || i>=aList->length)return ERR;

    i = index;
    while(i<aList->length-1)
    {
        aList->elem[i] = aList->elem[i+1];
        i++;
    }
    aList->length--;

    return OK;
}

int ListTraverse(SqList aList)
{
    int i=0;
    while(i < aList.length){
        printf("%ct",aList.elem[i]);
        i++;
    }
    printf("n");
    return OK;
}

{
    SqList aList ;
    char element;
    int position;

    InitList( &aList );

    while(1){
        printf("Please input element and position to insert in (input ; to quit) :n");
        scanf("%1s,%d",&element,&position);
        if(';' == element) break;
        ListInsert(&aList,element,position);
    }

    ListDelete(&aList,&element,0);

    ListTraverse(aList);

    printf("length :%d . n",aList.length);
    return OK;
}