关于节点类的问题，望高手赐教~~~

Node *NEXT; //指向NODE的指针
      Node(string sName,Node *NEXT=NULL):stud(sName)  构造函数
      {
          this->sName=sName;
          this->NEXT=NEXT;
      }
      Node(string sName,string sAddree ,string sCareer ,string sPhone,string sMobile,string  sEmail,string
             sID,string  sSEX,string  sAGE,string  sWork,string  sachievement)
          :stud( sName,sAddree , sCareer ,sPhone, sMobile, sEmail,sID, sSEX,sAGE, sWork,sachievement) 还是构造函数
      {
      }