Answer Posted / satya

//using the std::string class from namespace std.

#include<iostream>
using namespace std;

int main()
{
string myStr;

cout<<"enter new string.";
getline(cin,myStr);
cout<<"entered value is "<<myStr;

char ch;
bool m=false;

string newStr;
newStr.resize(1);
int k=0;
for(int i=0;i<myStr.length();i++)
{
ch=myStr[i];
for(int j=0;j<k+1;j++)
{
if(ch!=newStr[j]) m=false;
else { m=true; break;}
}
if(m==false)
{
newStr.resize(newStr.size()+1);
newStr[++k]=ch;
}
}
cout<<"\nAfter removing duplicate letters, string is "<<newStr;
}

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