C / C++ / MFC

CString str = "text";
char* szReversed;
szReversed = _strrev(str.GetBuffer(0));

#include <algorithm>
...
m_strResultData=m_strEditData;
int nLength=m_strResultData.GetLength();
LPSTR buffer=m_strResultData.GetBuffer(nLength);
std::sort(buffer,buffer+nLength);
m_strResultData.ReleaseBuffer();

#include <algorithm>
#include <sstream>
#include <string>
#include <vector>
...
// split into words and store them in a vector.
std::vector<std::string> v;
std::istringstream istr((LPCSTR)m_strEnterData);
for(;;){
  std::string s;
  istr>>s;
  if(s.empty())break;
  v.push_back(s);
}
// sort the words
std::sort(v.begin(),v.end());
// output the result to m_strDisplayResult
m_strDisplayResult="";
for(std::vector<std::string>::const_iterator it=v.begin();
    it!=v.end();
    ++it){
  if(it!=v.begin())m_strDisplayResult+=" ";
  m_strDisplayResult+=it->c_str();
}

CString buff;

GetText(GetCurSel(), buff);