vc实验报告实验4

武汉理工大学理学院数学系课程实验报告课程名称：VC程序设计班级

日期2012/11/7

成绩评定

姓名实验室理学院机房

老师签名

学号实验名称保存信息到文档所用软件VC++6.0office实

验

目

的及内容1、构造学生类；2、自定义带有头结点的学生类链表；3、保存信息到外部文件，从外部文件读入学生信息；实

验

原理步骤、

1、新建新建MFCAPPwizard工程，建立单文档并命名为DOCVIEW，并选择CView的父类为CFormView；2、设计对话框的形式3、新建学生信息类CStudent,建立Student.h和Student.cpp文件；4、建立SqList链表，SqList.h文件代码如下：#include"stdafx.h"#include"Student.h"typedefCStudentListData;classList;#ifndef_LIST_H_H#define_LIST_H_HclassListNode{ friendclassList;public: ListDatam_nStu; ListNode*m_nStuNext;ListNode*m_nStuPre; };classList{public: ListNode*HeadPtr;public: List(); ~List(); intGetData(CStudent&n_Stu,intn); intGetHome(CStudent&n_Stu); intGetPre(CStudent&n_Stu,intn); intGetLast(CStudent&n_Stu,int&n); intGetNext(CStudent&n_Stu,intn); intInsert(CStudentn_Stu,intn); intDelete(intn); intDeleteAll(); intGetLength(); voidSaveCon(); voidOpenCon();};#endif5、在SqList.cpp文件中实现该链表；6、在CDOCVIEWDoc类中包含两个文件，并添加如下数据成员#include"SqList.h"public: Listm_StudentList;7、在CDOCVIEWView类中包含SqList.h文件并添加如下变量；public: CDOCVIEWDoc*GetDocument();CDOCVIEWDoc*pDoc;List*m_viewStudentList; CStudentmStudentCon; intm_Position;8、初始化添加的变量：voidCDOCVIEWView::OnInitialUpdate(){CFormView::OnInitialUpdate();GetParentFrame()->RecalcLayout();ResizeParentToFit();pDoc=GetDocument();m_viewStudentList=&pDoc->m_StudentList;m_Position=m_viewStudentList->GetLength();m_viewStudentList->GetData(mStudentCon,1);m_nAge=mStudentCon.m_nAge;m_nGrade=mStudentCon.m_nGrade;m_strName=mStudentCon.m_strName;UpdateData(FALSE);}9、在CDOCVIEWView中添加变量和控件对应的消息处理函数；函数名如下protected: //{{AFX_MSG(CDOCVIEWView) afx_msgvoidOnDelete(); afx_msgvoidOnUpdateDelete(CCmdUI*pCmdUI); afx_msgvoidOnEditClearAll(); afx_msgvoidOnUpdateEditClearAll(CCmdUI*pCmdUI); afx_msgvoidOnHome(); afx_msgvoidOnUpdateHome(CCmdUI*pCmdUI); afx_msgvoidOnLast(); afx_msgvoidOnUpdateLast(CCmdUI*pCmdUI); afx_msgvoidOnNew(); afx_msgvoidOnNext(); afx_msgvoidOnUpdateNext(CCmdUI*pCmdUI); afx_msgvoidOnPre(); afx_msgvoidOnUpdatePre(CCmdUI*pCmdUI); afx_msgvoidOnReclear(); afx_msgvoidOnFileSave(); afx_msgvoidOnFileOpen(); //}}AFX_MSG DECLARE_MESSAGE_MAP()};10、链表中的部分函数代码如下：//插入学生信息intList::Insert(CStudentn_Stu,intn){ ListNode*p=HeadPtr; for(inti=1;i<n;i++) {p=p->m_nStuNext; } ListNode*newNode=newListNode; newNode->m_nStu=n_Stu; if(n==1) { HeadPtr->m_nStuNext=NULL; newNode->m_nStuNext=HeadPtr;HeadPtr->m_nStuPre=newNode; HeadPtr=newNode; } else { newNode->m_nStuPre=p->m_nStuPre; p->m_nStuPre->m_nStuNext=newNode; newNode->m_nStuNext=p; p->m_nStuPre=newNode; }return1;}//删除学生信息intList::Delete(intn){ ListNode*p=HeadPtr; if(p->m_nStuNext==NULL||n==1) { HeadPtr->m_nStuNext=NULL; return0; } else { for(inti=1;i<n;i++) { p=p->m_nStuNext; } p->m_nStuPre->m_nStuNext=p->m_nStuNext; p->m_nStuNext->m_nStuPre=p->m_nStuPre; deletep; } return1;}//取出变量信息：intList::GetData(CStudent&n_Stu,intn){ ListNode*p=HeadPtr; if(p->m_nStuNext!=NULL||n>1){ for(inti=1;i<n;i++) { p=p->m_nStuNext; } n_Stu.m_nAge=p->m_nStu.m_nAge;n_Stu.m_nGrade=p->m_nStu.m_nGrade; n_Stu.m_strName=p->m_nStu.m_strName;return1; } else { HeadPtr->m_nStuNext=NULL; n_Stu.m_nAge=0; n_Stu.m_nGrade=0; n_Stu.m_strName=""; return0; }}//保存链表信息：voidList::SaveCon(){ ListNode*p=HeadPtr; CStringm_strfile; CFileDialogdlg(FALSE,NULL,NULL,OFN_HIDEREADONLY|OFN_OVERWRITEPROMPT,"*.*|*.*|",NULL); dlg.DoModal(); m_strfile=dlg.GetPathName(); ofstreammyFile; myFile.open(m_strfile); myFile<<"姓名"<<"\t"<<"年龄"<<"\t"<<"分数"<<endl; while(p->m_nStuNext!=NULL) { myFile<<p->m_nStu.m_strName.GetBuffer(0)<<"\t"<<p->m_nStu.m_nAge<<"\t"<<p->m_nStu.m_nGrade<<endl; p=p->m_nStuNext; } myFile.close();}//打开外部文件信息：voidList::OpenCon(){ListNode*p=HeadPtr; CStringm_strfile; CFileDialogdlg(TRUE,NULL,NULL,OFN_HIDEREADONLY|OFN_OVERWRITEPROMPT,"*.*|*.txt|",NULL);dlg.DoModal(); m_strfile=dlg.GetPathName();ifstreammyFile; myFile.open(m_strfile); CStringa,b,c; myFile>>a.GetBuffer(0)>>b.GetBuffer(0)>>c.GetBuffer(0); intn=0;while(!myFile.eof()) { ListNode*newNode=newListNode; myFile>>newNode->m_nStu.m_strName.GetBuffer(0)>>newNode->m_nStu.m_nAge>>newNode->m_nStu.m_nGrade;n++; CStudentstu=newNode->m_nStu; Insert(stu,n); } myFile.close();}11、程序中保存信息调用的代码：voidCDOCVIEWView::OnFileOpen(){ //TODO:Addyourcommandhandlercodeherem_viewStudentList->DeleteAll(); m_viewStudentList->OpenCon(); intl=m_viewStudentList->GetLength(); m_viewStudentList->Delete(l); m_strName=m_viewStudentList->HeadPtr->m_nStu.m_strName; m_nAge=m_viewStudentList->Head