Re: STL::MAP: Printing values only once ..

Hi,

I have a input.txt file separator by pipe '|' as -

40147|181|ORANGE|MIKE|XX||1000397900|3500

40148|373|ORANGE|BOB|XX||1078889400|4500

40149|673|ORANGE|TREY|XX||1095159900|5500

I only wish to have all the FIRST(ID=40147) and LAST FIELD(PRICE=3500) to be printed for three lines as given above.

I am reading as -

--

#include <iostream>

#include <fstream>

#include <sstream>

#include <string>

#include <boost/algorithm/string.hpp>

using namespace std;

struct FILE_INPUT {

        int ID;

        int Asset_ID;

        char T_Name[];

        char Symbol[];

        char Series[];

        char Gap;

        int Date;

        int price;

};

int main() {

        typedef std::map<int, int> unordmap;

        unordmap ask;

        FILE_INPUT fl_inp;

        memset( &fl_inp, 0, sizeof(fl_inp) );

        ifstream in ("input.txt");

        string s;

        const char delimiter = '|';

        while ( getline (in, s) ) {

        trim( s );

        if ( !s.empty() ) {

                stringstream strm( s );

                string item;

                getline( strm, item );

                stringstream stra( item );

                string tmp;

                getline( stra, tmp, delimiter );

                {

                       stringstream strb( tmp );

                       strb >> fl_inp.ID;

                }

                getline( stra, tmp, delimiter )

                {

                       stringstream strb( tmp );

                       strb >> fl_inp.price;

                }

                ask.insert( std::make_pair((fl_inp.ID),(fl_inp.price)) );

                unordmap::iterator pos = ask.begin();

                for (pos = ask.begin(); pos != ask.end(); ++pos) {

                        std::cout << "ID: " << pos->first << "\t"

                        << "Price: " << pos->second << std::endl;

                }

                std::cout << " " << endl;

        }

     }

}

--

The map is being inserted with both ID as key and price as value but while printing it prints the values thrice as -

ID: 40147 Price: 3500

ID: 40147 Price: 4500

ID: 40148 Price: 5500

ID: 40147 Price: 3500

ID: 40148 Price: 4500

ID: 40149 Price: 5500

The MAP should print all values together only once as -

ID: 40147 Price: 3500

ID: 40148 Price: 4500

ID: 40149 Price: 5500

--

Can I maintain some checks to print all values simply once.

Thanks.