Constructors

[magda]

Hi, When trying to run the program with these classes, the compiler says" No matching function to call Coordinate::Coordinate - I am not sure where are the mistakes:

@#ifndef GPSCOORD_H
#define GPSCOORD_H
#include <QString>
#include "coordinate.h"

class GPSCoord :public Coordinate {
public:
GPSCoord();
void setCoord(int d, int m, int s, char cd);
QString toString(bool decimal) const;

private:
Coordinate latitude;
Coordinate longitude;
};
#endif // GPSCOORD_H

//coordinate.cpp
#include <QString>
#include "coordinate.h"
#include <iostream>
using namespace std;

// constructor
Coordinate::Coordinate(int d, int m, int s, char cd){
degrees = d;
minutes = m;
seconds = s;
cardinalDirection = cd;
}
//gpscoord.cpp
#include <QString>
#include "gpscoord.h"
#include "coordinate.h"

//no-arg constructor which initialize
GPSCoord::GPSCoord(): Coordinate(0,0,0,'N'){}

void GPSCoord::setCoord(int d, int m, int s, char cd){
degrees = d;
minutes = m;
seconds = s;
cardinalDirection = cd;

//main.cpp
#include <QTextStream>
#include "coordinate.h"
#include "gpscoord.h"
#include <iostream>

int main(){

    QTextStream cout(stdout);
    Coordinate coord1(20,25,23,'N');
    cout<<coord1<<endl;,
    coord1.degrees = (20);
    coord1.minutes = (21);
    coord1.seconds = (30);
    coord1.cardinalDirection = 'N';
    coord1.toString();
    coord1.toDecimal();
    coord1.toString();

    GPSCoord gpscoord1;
    gpscoord1.setCoord(15,30,29,'N');
    gpsCoord1.toString();
    gpscoord1.latitude = (25.23676);
    gpscoord1.longitude = (23.4567);
    //cout << strbuf.str;

return 0;
}

[ChrisW67]

There is no default constructor for class Coordinate ... The Coordinate constructor expects values and creating a GPSCoord tries to create two Coordinate member variables without the arguments.

[magda]

I have added a default constructor, but now the compiler says int Coordinate::degrees are private in gpscoord.cpp. This is an assignment - the data members are private

@//coordinate.cpp
#include <QString>
#include "coordinate.h"
#include <iostream>
using namespace std;

// default constructor

Coordinate::Coordinate():degrees(0),minutes(0),seconds(0),cardinalDirection('N'){};

//gpscoord.cpp
#include <QString>
#include "gpscoord.h"
#include "coordinate.h"
#include <iostream>

//no-arg constructor which initialize
GPSCoord::GPSCoord(): Coordinate(degrees, minutes, seconds, cardinalDirection){}@