我是菜鸟，谁能告诉我后面怎么编写，还有前面也不知道对不对，谢谢了


#include  <iostream.h>         
class SeqList
{
private:     
    int MaxSize;                 
    int length;                    
    T *data;                        
public:
    SeqList( ) ;                    
    SeqList(int n ) ;            
    SeqList(T a[ ], int n,int m);      
    ~SeqList( ) ;                  
    void PrintList()      
    void  Delete(int i);               
    void   ScanDelete();               
};

SeqList::SeqList(int n )
{  
    data=new int[n+1];
    for(i=2;i<=n;i++)
        data[i]=1;
    length=n+1
}


void SeqList::Delete(int i)
{   
    j=i+i;
    while (j<=length)
    {
        data[j]=0;  j+=i;
    }
}

void SeqList:: ScanDelete()
{
for(i=2;i<length;i++)
if(data[i]==1)   
Delete(i);
}

void SeqList:: PrintList()
{
    for(i=2;i<=length;i++)
        if (data[i])
            cout<<"  "<<i;
}