ATL / WTL / STL

// sort_example.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <iostream>
#include <iomanip>
#include <fstream>
#include <string>
#include <list>
#include <iterator>
#include <vector>
#include <algorithm>

using namespace std;

struct pstchip_pin_wor {
    string primitive;
    string pin_name;
    string pin_number;

    /* optional constructors */
    pstchip_pin_wor( string aa, string bb, string cc) {
        primitive  = aa;
        pin_name   = bb;
        pin_number = cc;
    }

    //overridding operators
    pstchip_pin_wor& pstchip_pin_wor::operator = (const pstchip_pin_wor &itemToCopy) {
        this->primitive  = itemToCopy.primitive;
        this->pin_name   = itemToCopy.pin_name;
        this->pin_number = itemToCopy.pin_number;
        return *this;
    }

    int pstchip_pin_wor::operator == ( const pstchip_pin_wor& itemToCompare) const {
        if( this->primitive == itemToCompare.primitive  && this->pin_name  < itemToCompare.pin_name ) return 1;
        return 0;
    }

    int pstchip_pin_wor::operator  < ( const pstchip_pin_wor& itemToCompare) const {
        if( this->primitive  < itemToCompare.primitive ) return 1;
        if( this->primitive == itemToCompare.primitive && this->pin_name < itemToCompare.pin_name) return 1;
        return 0;
    }

};

//main function
int main(int argc, char* argv[]) {

int nRetCode = 0;

list<pstchip_pin_wor*>  wors_pstchip_pins;

//populate list
wors_pstchip_pins.push_back( new pstchip_pin_wor( "Europe",        "Spain",   "Madrid" ) );
wors_pstchip_pins.push_back( new pstchip_pin_wor( "North America", "USA",     "Washington DC" ) );
wors_pstchip_pins.push_back( new pstchip_pin_wor( "North America", "Canada",  "Ottawa" ) );
wors_pstchip_pins.push_back( new pstchip_pin_wor( "Europe",        "Germany", "Berlin" ) );
wors_pstchip_pins.push_back( new pstchip_pin_wor( "South America", "Brazil",  "Sao Paulo" ) );
wors_pstchip_pins.push_back( new pstchip_pin_wor( "North America", "Mexico",  "Mexico City" ) );

cout << "before sorting" << endl << endl;
for( list<pstchip_pin_wor*>::iterator ka = wors_pstchip_pins.begin(); ka != wors_pstchip_pins.end(); ka++ ) {
     cout << (*ka)->primitive << "==" << (*ka)->pin_name << "==" << (*ka)->pin_number << endl;
}

wors_pstchip_pins.sort();

cout << endl << "after  sorting" << endl << endl;
for( list<pstchip_pin_wor*>::iterator zm = wors_pstchip_pins.begin(); zm != wors_pstchip_pins.end(); zm++ ) {
     cout << (*zm)->primitive << "==" << (*zm)->pin_name << "==" << (*zm)->pin_number << endl;
}

return nRetCode;

} //end-function