Unable to use static function in a c++ program using Qt Creator.

Banerjee

Hello . I am new to Qt and I'm trying to make a database program in C++ using Qt Creator to provide a GUI.
As a part of my assignment in school, the requirement is to use a static member function , so i decided to add one to initialise my static data member with -1 , so as to use it to count the number of times the function x() is called on pushing a button . The error I am getting is this :

" expected constructor, destructor or type conversion before ';' token.
(In line 25 of the .cpp file )

Here is the code for the database.h and database.cpp file :

@#include <QtGui/QMainWindow>
#include "ui_database.h"
#include<QMessageBox>

class database : public QMainWindow
{
Q_OBJECT

public:
database(QWidget *parent = 0);
~database();
Ui::database ui;

private:
static int count; //static data member
private slots:
void x();
void search();
void modify();

static void init() //static inline function definition
{// int database::count=-1;//initialise the count to -1
count=-1;
}
};

#endif // DATABASE_H@

.cpp file:

@#include "database.h"
#include <person.h>
#include<QString>
#include<string.h>
#include<QMessageBox>
#include<QStandardItem>

database::database(QWidget *parent)
: QMainWindow(parent)
{
ui.setupUi(this);
connect(this->ui.pushButton,SIGNAL(clicked()),this,SLOT(x()));
connect(this->ui.pushButton_2,SIGNAL(clicked()),this,SLOT(search()));
connect(this->ui.pushButton_3,SIGNAL(clicked()),this,SLOT(modify()));
}

database::~database()
{

}
person p[10];//array of objects

int database::count;
database::init();//calling the static,inline member function to initialise count
void database ::x()
{
count++;//increment count to count the number of times button was pressed
person s1,s2;

QString x,q;
int y;
int z;
long m;
x = this->ui.textEdit->toPlainText();//to accept name
y = this->ui.textEdit_3->toPlainText().toInt();
z = this->ui.textEdit_7->toPlainText().toInt();
q=this->ui.textEdit_12->toPlainText();//to accept blood grp
m=this->ui.textEdit_11->toPlainText().toLong();//to accept phone number

p[count].add(x,y,z,m,q);//calling the function of the second cpp class
s2 = p[count].dis();

this->ui.textEdit_4->append(s2.name);

this->ui.textEdit_6->append(QString::number(s2.age));
this->ui.textEdit_5->append(QString::number(s2.id));
this->ui.textEdit_8->append(QString::number(s2.phone));
this->ui.textEdit_15->append(s2.blood);

//now clearing the text boxes after having displayed below

this->ui.textEdit->setText("");
this->ui.textEdit_3->setText("");
this->ui.textEdit_7->setText("");
this->ui.textEdit_12->setText("");
this->ui.textEdit_11->setText("");
}
void database::search() //function to search according to the id
{
int id2;
int found;
int j;
id2=this->ui.textEdit_2->toPlainText().toInt();
for(j=0;j<=count;j++)
{
if(p[j].id==id2)
{
found=1;
break;
}
else
{
found=0;
}

}
if(found==1)
{
this->ui.textEdit_9->setText(p[j].name);
this->ui.textEdit_10->setText(QString::number(p[j].age));
this->ui.textEdit_13->setText(QString::number(p[j].phone));
this->ui.textEdit_14->setText((p[j].blood));
}
else
{
QMessageBox msgBox;
msgBox.setText("NOT FOUND");
msgBox.exec();
}
}

void database::modify()
{ int x2;// for age
long ph2; // for phone number
QString q1,q2;//for name and blood group
int id2;//local var to take ID of data to be modified
int found;
int j;

// int current_id;
id2=this->ui.textEdit_2->toPlainText().toInt();
for(j=0;j<=count;j++)
{
if(p[j].id==id2)
{
found=1;
break;
}
else
{
found=0;
}
}

if(found==1)
{
    q1=this->ui.textEdit_9->toPlainText();//for new name in text box
    x2=this->ui.textEdit_10->toPlainText().toInt();//for new age in RHS Textbox
    ph2=this->ui.textEdit_13->toPlainText().toLong();//for new phone number in RHS textbox
    q2=this->ui.textEdit_14->toPlainText();//for new blood group :P
   person p2,p3;
   p[j].add(q1,x2,id2,ph2,q2);
   p3=p[j].dis();
   this->ui.textEdit_4->append(p3.name);

   this->ui.textEdit_6->append(QString::number(p3.age));
   this->ui.textEdit_5->append(QString::number(p3.id));
   this->ui.textEdit_8->append(QString::number(p3.phone));
   this->ui.textEdit_15->append(p3.blood);

  this->ui.textEdit_2->setText("");
   this->ui.textEdit_9->setText("");
   this->ui.textEdit_10->setText("");
   this->ui.textEdit_13->setText("");
   this->ui.textEdit_14->setText("");


}

}
@

Need your help as i really need to do this assignment for my school project . Thanks.

Banerjee

The mistake I made here was that I was trying to call the static member function globally , instead of doing so in a function or in the main . Sorry for having posted this here . It was purely a mistake in c++ programming.