error: undefined reference to `Guessinggame::score(QList<int>, QList<int>)'

[QTWhiz]

I have this error in my class,i cant seems to get my program right:Below is the program

class Guessinggame : public QObject
{
    Q_OBJECT
public:
    explicit Guessinggame(QObject *parent = 0);
    Guessinggame(int n, int fn, int tn);
      int getNum()const;
      int getFromNum()const;
      int getToNum()const;
      QList<int> generateNumbers(bool unique);
     static int score(QList<int> input,QList<int> correct);
private:
  int num;
  int fromNum;
  int toNum;

//signals:

//public slots:

};

#endif // GUESSINGGAME_H
 

#include "guessinggame.h"

Guessinggame::Guessinggame(QObject *parent) :
    QObject(parent)

{

}
Guessinggame::Guessinggame(int n, int fn, int tn):num(n), fromNum(fn),toNum(tn){

}
int Guessinggame::getNum()const
{
  return num;
}
int Guessinggame::getFromNum()const
{
  return fromNum;
}
int Guessinggame::getToNum()const
{
return toNum;
}
QList<int> Guessinggame::generateNumbers(bool unique){
  QList<int> generatedNumbersList;
  QTime time = QTime::currentTime();
  qsrand((uint)time.msec());
  bool generateNextNumber = true;
  do{
     int newNumber = qrand() % ((getToNum() + 1) - getFromNum()) + getFromNum();
     if(unique){
         if(generatedNumbersList.contains(newNumber) == false){
           generatedNumbersList.append(newNumber);
         }
       }
     else{
         generatedNumbersList.append(newNumber);
       }
       if(generatedNumbersList.size() == getNum()){
           //set your generateNextNumber to false here;
           generateNextNumber=false;
         }
     }while(generateNextNumber);
     return generatedNumbersList;
 }
and the main is:

#include<QDebug>
#include <QInputDialog>
#include<QMessageBox>
#include <QApplication>
#include <QWidget>
//#include<QList>
#include "guessinggame.h"

int main(int argc, char *argv[])
{
  QApplication a(argc, argv);
  //constructor initialization
  Guessinggame g(6,1,39) ;
  int continuePlaying = 0;
  QList<int> generatedNumbers = g.generateNumbers(true);
  QList<int> userNumberList;
  do{
    //clear the list to start with
    if(!userNumberList.isEmpty()){
        userNumberList.clear();
    }
    bool ok;
    QString userNumbers = QInputDialog::getText(0, "Play Guessing Game","Enter Six Numbers between  1 and 39:", QLineEdit::Normal,
                                             "", &ok);
    if(ok){ //user clicks ok on the dialog box
      QStringList listOfNumbers = userNumbers.split(" ");
      qDebug() << "size is "<< listOfNumbers.length();
      int numberofDuplicates = listOfNumbers.removeDuplicates(); //check for duplicate number
      bool allOk(true); //used to check if user only entered integers on input dialog
      if(numberofDuplicates <= 0 && listOfNumbers.size() == g.getNum()){
        for(int x = 0; x < listOfNumbers.size() && allOk; x ++){
            QString StringNumber = listOfNumbers.at(x);
            userNumberList.append(StringNumber.toInt(&allOk,10));
         }
        if(allOk){ //this checks if user entered
            int correctGuesses = g.score(userNumberList, generatedNumbers);
            QString response = QString ("You got %1 numbers correct. Do you want to continue")
            .arg(correctGuesses);
            continuePlaying = QMessageBox::question(0, "Play again?", response, QMessageBox::Yes | QMessageBox::No);
            }
        }
      if(!allOk || numberofDuplicates > 0 || listOfNumbers.size() != g.getNum()){ //user did something wrong
        //write use message here
          QString numberofDuplicates = QInputDialog::getText(0, "Test another sentence", "Enter 1 for yes and 0 for No: ");
        continuePlaying = QMessageBox::question(0,"", "errorMessage", QMessageBox::Yes | QMessageBox::No);
        }
      }else{ //user clicked cancel on dialigi box
        continuePlaying = QMessageBox::No;
      }
  }while(continuePlaying == QMessageBox::Yes);
  return 0;
}

[SGaist]

Hi and welcome to devnet,

From the looks of it, you did not implement that method.

[QTWhiz]

@SGaist int correctGuesses=g. score (userNumberlist, generated Numbers) is where a call that function on main cpp

[Christian Ehrlicher]

@QTWhiz said in error: undefined reference to &#x60;Guessinggame::score(QList<int>, QList<int>)':

is where a call that function on main cpp

@SGaist did not want to know where you call it but if you implemented it. It's at least not in your provided code. And please use the <code> - tags to make your code more readable.

[D Mputu]

@QTWhiz

#ifndef GUESSINGGAME_H
#define GUESSINGGAME_H
#include "GuessingGame.h"

#include <QDialog>
//#include <QWidget>
#include <QTime>
#include <QList>

class GuessingGame
{
public:
GuessingGame(int n, int fn, int tn); //constructor
int getNum() const;
int getFromNum() const;
int getToNum() const;
QList<int> generateNumbers(bool unique);
static int score(QList<int> input, QList<int> correct);

private:
int num; // stores number of values to be guessed
int fromNum;
int toNum;

};

#endif // GUESSINGGAME_H

#include "GuessingGame.h"

GuessingGame::GuessingGame(int n, int fn, int tn):num(n), fromNum(fn),toNum(tn)
{

}
int GuessingGame::getNum()const
{
return num;
}
int GuessingGame::getFromNum()const
{
return fromNum;
}
int GuessingGame::getToNum()const
{
return toNum;
}

QList<int> GuessingGame::generateNumbers(bool unique)
{
QList<int> generatedNumbersList;
QTime time = QTime::currentTime();
qsrand((uint)time.msec());
bool generateNextNumber = true;
do{
int newNumber = qrand() % ((getToNum() + 1) - getFromNum()) + getFromNum();
if(unique){
if(generatedNumbersList.contains(newNumber) == false){
generatedNumbersList.append(newNumber);
}
}
else{
generatedNumbersList.append(newNumber);
}
if(generatedNumbersList.size() == getNum()){
//set your generateNextNumber to false here;
generateNextNumber=false;
}
}while(generateNextNumber);
return generatedNumbersList;
}

int GuessingGame::score(QList<int> input, QList<int> correct)
{

int numberOfCorrectNumbers = 0;

if(!input.isEmpty() && !correct.isEmpty()){

for(int index = 0; index < input.size(); index ++){ //loop, use your own syntax if you want

 int number = input.at(index);

 if(correct.contains(number)){

   numberOfCorrectNumbers++;

  }

}
}
return numberOfCorrectNumbers;
}

#include <QDebug>
#include <QInputDialog>
#include <QMessageBox>
#include <QApplication>
#include <QWidget>
#include <QList>
#include "GuessingGame.h"

int main(int argc, char *argv[])
{
QApplication a(argc, argv);
//constructor initialization
GuessingGame g(6,1,39) ;
int continuePlaying = 0;
QList<int> generatedNumbers = g.generateNumbers(true);
QList<int> userNumberList;
do{
//clear the list to start with
if(!userNumberList.isEmpty()){
userNumberList.clear();
}
bool ok;
QString userNumbers = QInputDialog::getText(0, "Play Guessing Game","Enter Six Numbers between 1 and 39:", QLineEdit::Normal,
"", &ok);
if(ok){ //user clicks ok on the dialog box
QStringList listOfNumbers = userNumbers.split(" ");
qDebug() << "size is "<< listOfNumbers.length();
int numberofDuplicates = listOfNumbers.removeDuplicates(); //check for duplicate number
bool allOk(true); //used to check if user only entered integers on input dialog
if(numberofDuplicates <= 0 && listOfNumbers.size() == g.getNum()){
for(int x = 0; x < listOfNumbers.size() && allOk; x ++){
QString StringNumber = listOfNumbers.at(x);
userNumberList.append(StringNumber.toInt(&allOk,10));
}
if(allOk){ //this checks if user entered
int correctGuesses = g.score(userNumberList, generatedNumbers);
QString response = QString ("You got %1 numbers correct. Do you want to continue")
.arg(correctGuesses);
continuePlaying = QMessageBox::question(0, "Play again?", response, QMessageBox::Yes | QMessageBox::No);
}
}
if(!allOk || numberofDuplicates > 0 || listOfNumbers.size() != g.getNum()){ //user did something wrong
//write use message here
QString numberofDuplicates = QInputDialog::getText(0, "Test another sentence", "Enter 1 for yes and 0 for No: ");
continuePlaying = QMessageBox::question(0,"", "errorMessage", QMessageBox::Yes | QMessageBox::No);
}
}else{ //user clicked cancel on dialigi box
continuePlaying = QMessageBox::No;
}
}while(continuePlaying == QMessageBox::Yes);
return 0;
}

[Christian Ehrlicher]

@D-Mputu : I won't take a look until you fix your post to use the <code> tags to make it readable...