palaginacode

#include <iostream>
#include <fstream>

using namespace std;

enum status
{
        Start = 0,
        PossibleComment = 1,
        Comment1 = 2,
        Comment2 = 3,
        PossibleEnd = 4
};

int main ()
{
    ifstream fin; ofstream fout;
    fin.open ("input.txt"); fout.open ("output.txt");
    status st = Start;
    if (fin)
    {
        char symbol;
        while (fin.get(symbol))
        {
            cout<<symbol;
            switch (st)
            {
                case Start:
                    if (symbol == '/')
                    {
                        st = PossibleComment;
                        break;
                    }
                    else
                    {
                        fout << symbol;
                        break;
                    }
                case PossibleComment:
                    if (symbol == '/')
                    {
                        st = Comment1;
                        break;
                    }
                    else
                    {
                        if (symbol == '*')
                        {
                            st = Comment2;
                            break;
                        }
                        else
                        {
                            fout << symbol;
                            break;
                        }
                    }
                case Comment1:
                    if (symbol == '\n')
                    {
                        st = Start;
                        fout<<symbol;
                        break;
                    }
                    else
                    {
                        break;
                    }
                case Comment2:
                    if (symbol == '*')
                    {
                        st = PossibleEnd;
                        break;
                    }
                    else
                    {
                        break;
                    }
                case PossibleEnd:
                    if (symbol == '/')
                    {
                        st = Start;
                        break;
                    }
                    else if(symbol == '*')
                         {
                             break;
                         }
                         else
                         {
                             st = Comment2;
                             break;
                         }
            }
        }
    }
    fin.close(); fout.close();
    return 0;
}