动态创建对象

for(j=0;j<10;j++)
    {
        lin=p[j]=new student[5];
        for(k=0;k<5;k++)
        {
         cout<<"输入第"<<n+1<<"个学生的成绩"<<endl;
         cin>>num;
           if(num==-1)
           {
            countj=j;
            temp=1;
            break;
           }
         cin>>name>>great;
         (*lin).fuzhi(num,name,great);
         lin++;
         n++;
        }
        if(temp==1)
            break;
    }
咋不行呢，郁闷，关于动态建立对象咋用啊，求帮助