Sum values in differents tables

[Caio.Sousa]

I have 2 tables I would like to get the sum variable from the first and add up with the value that is in B [6] (data) from the other table, How could I do this?Sum values ​​from different tables?

void menupainel::on_btnAttItem_clicked()
{
    borrarItem();

    QFile file("C:\\Users\\Caio\\Documents\\cadastroItem.txt");

        if(!file.open(QIODevice::ReadOnly|QIODevice::Text))
            return;

        QTextStream in(&file);
        while(!in.atEnd()){
            QString line =in.readLine();
            listar(line);
        }
       file.close();

}

void menupainel::listar(QString linea){


    QStringList A =linea.split("-");
    QString Descricao=A[0];
    QString Qntd=A[1];
    QString Preco=A[2];
    QString Total=A[3];

    ui->tableWidget_2->insertRow(ui->tableWidget_2->rowCount());
    ui->tableWidget_2->setItem(ui->tableWidget_2->rowCount()-1,0,new QTableWidgetItem(Descricao));
    ui->tableWidget_2->setItem(ui->tableWidget_2->rowCount()-1,1,new QTableWidgetItem(Qntd));
    ui->tableWidget_2->setItem(ui->tableWidget_2->rowCount()-1,2,new QTableWidgetItem(Preco));
    ui->tableWidget_2->setItem(ui->tableWidget_2->rowCount()-1,3,new QTableWidgetItem(Total));


    int sum=0;
        for (int i=0;i< ui->tableWidget_2->rowCount();i++) {
                    QTableWidgetItem *item =  ui->tableWidget_2->item(i,3);
                    int value = item->text().toFloat();
                   sum+=value;
                }



        ui->txtTotalValor->setText("R$"+QString::number(sum));


}

void menupainel::lis(QString linea,QString line){


    QStringList A =linea.split("-");
    QString Nome=A[0];


    QStringList B = line.split("-");
    QString numero = B[0];
    QString tipoQ = B[2];
    QString data = B[6];

    ui->tableWidget->insertRow(ui->tableWidget->rowCount());
    ui->tableWidget->setItem(ui->tableWidget->rowCount()-1,0,new QTableWidgetItem(Nome));
    ui->tableWidget->setItem(ui->tableWidget->rowCount()-1,1,new QTableWidgetItem(tipoQ));
    ui->tableWidget->setItem(ui->tableWidget->rowCount()-1,2,new QTableWidgetItem(numero));
    ui->tableWidget->setItem(ui->tableWidget->rowCount()-1,3,new QTableWidgetItem(data));

}

[Christian Ehrlicher]

And what's the difference from your first question where you want to sum up one table? Just iterate over the second as you did with the first...

[Caio.Sousa]

Yes, but how do I add the variables from the first table to the second table if the return is of the void type?

[jsulm]

@Caio.Sousa Maybe I don't understand the question correctly, but isn't it really easy?

int sum=0;
for (int i=0;i< ui->tableWidget_2->rowCount();i++) {
    QTableWidgetItem *item1 =  ui->tableWidget_2->item(i,3);
    QTableWidgetItem *item2 =  ui->tableWidget_3->item(i,3);
    int value1 = item1->text().toFloat();
    int value2 = item2->text().toFloat();
    sum+=value1 + value2;
}

"if the return is of the void type" - what return value do you mean?

[mrjj]

Hi
You could use a function :)

int CalcSumFromCol(QTableWidget* table, int col) {
  int sum = 0;
  for (int i = 0; i < table->rowCount(); i++) {
    QTableWidgetItem* item = table->item(i, 3);
    int value = item->text().toFloat();
    sum += value;
  }
  return sum;
}

and simply call it
// get from first table
int sum1 = CalcSumFromCol(ui->tableWidget_1, 3);
// get from second table
int sum2 = CalcSumFromCol(ui->tableWidget_2, 4); // 4 is random. use real col number
// add the sums
int masterSum=sum1+sum2;