voidCalculator::on_comboBox_currentIndexChanged(int index){
num21=ui->doubleSpinBox->value();
num22=ui->doubleSpinBox_2->value();int index23=ui->comboBox->currentIndex();switch(index23){case0: result = num21+num22;break;case1: result = num21-num22;break;case2: result = num21*num22;break;case3: result = num21/num22;break;}
ui->lineEdit->setText(QString::number(result));}
voidCalculator::on_doubleSpinBox_2_valueChanged(double arg1){
num21=ui->doubleSpinBox->value();
num22=ui->doubleSpinBox_2->value();int index23=ui->comboBox->currentIndex();switch(index23){case0: result = num21+num22;break;case1: result = num21-num22;break;case2: result = num21*num22;break;case3: result = num21/num22;break;default:break;}
ui->lineEdit->setText(QString::number(result));}