Строка, нет повторяющихся символов

#include <iostream.h>
 
#include <stdlib.h>
 
#include <afx.h>
 
#include <string.h>
 
int str_sl(CString,CString,CString,CString [20]);
 
int chisl_cub(int,CString[20],int[20]);
 
CString pov_sl(int,CString [20]);;
 
void main(){CString mslov[20],rez;
 
int i,mm,n,mch[20];
 
char *cstr;
 
cstr=strdup("");
 
cout<<"Vvedite stroky"<<endl;
 
cin>>cstr;
 
CString x(cstr);
 
n=str_sl(x,",",".",mslov);
 
for (i=0;i<n;i++) 
 
{cout<<"Slovo nomer "<<i+1<<" "<<mslov[i]<<" dlina  "<<mslov[i].GetLength()<<endl;}
 
mm=chisl_cub(n,mslov,mch);
 
if (mm==0) cout <<"net chislovbix slov "<<endl;
 
else
 
{for (i=0;i<mm;i++) cout<<mch[i]<<" ";cout<<endl;}
 
rez=pov_sl(n,mslov);
 
if (rez.IsEmpty()) cout <<"net nechislovbix slov"<<endl;
 
else cout<<rez<<endl;
 
}
 
//---
 
int str_sl(CString x,CString rsl,CString kstr,CString mslov[20])
 
{int n=0,nm,l;
 
//char *adrz;
 
do {l=x.GetLength();
 
nm=x.Find(rsl);
 
if (nm==-1)
 
nm=x.Find(kstr);//rsl=kstr;
 
mslov[n]="";
 
mslov[n]=x.Left(nm);
 
x=x.Right(l-nm-1);
 
n++;
 
} while(x.Compare("")!=0);
 
return n;
 
}
 
//---
 
int chisl_cub(int n,CString mslov[20],int mch[20])
 
{int l=0,i,b;CString r;
 
for(i=0;i<n;i++)
 
{r=mslov[i].SpanIncluding("1234567890");
 
if (r.GetLength()==mslov[i].GetLength()){b=atoi(mslov[i]); mch[l]=b*b*b;l++;
 
}}
 
return l;
 
}

CString pov_sl(int n,CString mslov[20])
 
{int i,j,cnt=0,p;
 
CString rezstr,x,r;
 
rezstr="";
 
for (i=0;i<n;i++)
{
    x=mslov[i];
{
    for(j=i+1;j<n;j++)
if (x.Compare("mslov[j]")!=0)
cnt=cnt+0;
else 
cnt=cnt+1;
 
if (cnt = 0)
rezstr+=x; rezstr+=",";
 
}}
return rezstr;

CString pov_sl(int n,CString mslov[20])
 
{int i,j,cnt=0;
 
CString rezstr,x,r;
 
rezstr="";
 
for (i=0;i<n;i++)
{
    x=mslov[i];
{
    for(j=i+1;j<n;j++)
if (x.Compare("mslov[j]")!=0)
cnt=cnt+0;
else 
cnt=cnt+1;
}
if (cnt = 0)
rezstr+=x; rezstr+=",";
 
}
return rezstr;
}

#include <iostream>
#include <iterator>
#include <algorithm>
#include <vector>
#include <string>
using namespace std; 
 
int str_sl(string&, vector<string>&);
 
int main()
{
    vector<string> words;
    vector<string>::iterator pos;
    string rez,
           cstr;
 
    int i, 
        mm,
        n,
        mch[20];
 
    cout << "Vvedite stroky" << endl;
        getline(cin, cstr, '\n');
 
    n = str_sl(cstr, words);
 
    for (i=0; i < n; i++) 
        cout << "Slovo nomer " << i+1 << " " << words[i] << "; dlina: " << words[i].size() << endl;
 
    sort(words.begin(), words.end());
    unique_copy(words.begin(), words.end(), ostream_iterator<string>(cout, "\n"));  
    
 
    system("pause");
    return 0;
}
 
//---
  
int str_sl(string& in, vector<string>& outArray)
 
{
    string::size_type beg = 0,
                      end = 0;
    
    while((beg = in.find_first_not_of(",. ", end)) != string::npos)
    {
        end = in.find_first_of(",. ", beg);
        outArray.push_back(in.substr(beg, end - beg));
    }
    return outArray.size();
}