a06c.cpp

TSP 10 city ,read data from text file

//Musterloesung A06c

#include<iostream>
#include<fstream>
#include<map>
#include<iomanip>
#include<algorithm>

using namespace std;

// global variables
int n_orders;

// structs
struct Order{
	char id;
	int duration;
	int duedate;
};

// function prototypes
void readInputData( char * filename, multimap<int,Order> &orders );

int main( int argc, char * argv[] )
{
	if ( argc < 2 )  {
		cout << "command line arguments missing!" << endl;
		cout << "argv[1] = inputfilename!" << endl;
		exit(1);
	}
	//cout << "cmd line arg 1: " << argv[0] << endl;
	//cout << "cmd line arg 3: " << argv[2] << endl; 
	
	multimap<int, Order> orders;
	multimap<int, Order>::iterator it_orders;
	readInputData( argv[1], orders );
	
	// print data read 
	for ( it_orders = orders.begin(); it_orders != orders.end(); it_orders++ ) {
		cout << it_orders->second.id << " " << it_orders->second.duration << " " << it_orders->second.duedate << endl;
	}

	return EXIT_SUCCESS;
}

void readInputData( char * filename, multimap<int, Order> &orders )
{
	ifstream in(filename);
	if ( in.fail() ) {
		cout << "problem opening: " << filename << endl;
		exit(1);
	}
	char buffer[1000];
	in.getline(buffer, 1000, '=');
	in >> n_orders;
	in.getline(buffer, 1000);
	in.getline(buffer, 1000);
	
	Order o;
	for ( int i = 0; i < n_orders; i++ ) {
		in >> o.id >> o.duration >> o.duedate;
		//cout << o.id << " " << o.duration << " " << o.duedate << endl;
		orders.insert( make_pair(o.duedate, o));
	}
	in.close();
}