C / C++ / MFC

CString str = "Hello you";
char* pszTxt = (LPTSTR)str;

LPTSTR CMainDlg::XuLyChuoi() {
    TCHAR* tmp_sz = <font color=blue>new</font> TCHAR[1000];
    ::GetWindowText(GetDlgItem(IDC_EDIT1), tmp_sz, 1000*<font color=blue>sizeof</font>(TCHAR));
    CString s = tmp_sz;
    <font color=blue>int</font> index = 1;
    <font color=blue>while</font> ((index = s.Find(_T(<font color=gray>"x"</font>), index)) != -1) {
        CString s1 = s[index-1];
        s1 += s[index];
        CString s2 = s[index-1];
        s2 += _T(<font color=gray>"*"</font>);
        s2 += s[index];
        s.Replace(s1, s2);
    }
    ::_tcscpy(tmp_sz, (LPTSTR)s); <font color=green>// Notice that you cannot affect a C-style string with the operator = !!!!</font>

    <font color=blue>return</font> tmp_sz;
}

strcpy(tmp_sz, (LPCTSTR)s, s.GetLength());
return tmp_sz;

// position after the line you want to change
// read all the adresses
CList<CString> StringList;
CString sLine = "";
while( YourFileObject.ReadString(sLine) )
{
    StringList.AddTail(sLine);
}

/*
    Change the address you want to change
    Place the file pointer after the changed address
*/
// write the other address back
while( !StringList.IsEmpty() )
{
    YourFileObject.WriteString(StringList.RemoveHead());
}

[Addresses]<br />
Address1=Description1<br />
Address2=Description2<br />
Address3=Description3

"One must learn from the bite of the fire to leave it alone." - Native American Proverb