小编the*_*der的帖子

我正在使用向量将数据(结构)写入文件,当我尝试使用向量迭代器检索数据时,它给了我: "Vector iterator is not dereferenceable."

这是我的代码:

void CProgram_1_STLDlg::OnBnClickedBtnView()
{
    // TODO: Add your control notification handler code here
    CFile file;
    CFileException e;
    studentVector::iterator sit;
    studentVector::iterator sBegin = sVector.begin();
    studentVector::iterator sEnd = sVector.end();

    CString path = _T("D:\\Student.txt");

    if ( file.Open(path, CFile::modeRead, &e) ) {
        while ( file.Read( (char *)&sVector, sizeof(sVector)) ) {
            AfxMessageBox(_T("File opened in read mode."), MB_ICONINFORMATION);
            AfxMessageBox(_T("ID:\t")+sit->id+L"\nName:\t"
                           +sit->name+L"\nMarks:\t"+sit->marks+L
                          "\nPercentage:\t"+sit->per+L"\nState:\t"+sit->state);
            sit++;
        }
        //file.Read( (char *)&sData, sizeof(sData));

        /*for ( sIterator = sVector.begin(); sIterator != sVector.end(); sIterator++ ) {
                //AfxMessageBox(_T("ID:\t")+sIterator->id+L
                                "\nName:\t"+sIterator->name+L"\nMarks:\t" …