Andy's Second Dictionary

#include<bits/stdc++.h>

using namespace std;

set<string>st;

string s,s1;

int main()
{
    stringstream ss;

    int len,i;

    while(cin>>s)
    {
        len = s.size();

        if(s[len-1]=='-')
        {
            s.erase(len-1);
        }
        else
        {
            s+=" ";
        }

        for(i=0;i<len;i++)
        {
            if(s[i]>='A' && s[i]<='Z')
            {
                s[i]+=32;
            }
            else if((s[i]<'a' || s[i]>'z') && s[i]!='-')
            {
                s[i] = ' ';
            }
        }

        ss<<s;
    }

    while(ss>>s1)
    {
        st.insert(s1);
    }

    for(auto it : st)
    {
        printf("%s\n",it.c_str());
    }

    return 0;
}