To Display output like c=5 in qt creator within same line edit.

i want to display output line c=5 in sam line edit. but m only getting 5 .

mainwindow.cpp

Code:

---

#include "mainwindow.h"
#include "ui_mainwindow.h"
 
MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    connect(ui->pushButton, SIGNAL(clicked()),this,SLOT(result()));
}
 
void MainWindow::result()
{
int a=2;
int b=3 ;
int c= a+b;
QString s="";
ui->lineEdit->setText("c=");
ui->lineEdit->setText(s.setNum(c));
 
 
}
 
MainWindow::~MainWindow()
{
    delete ui;
}

---

Look at arg() member function in QString and it's overloads, and construct a QString with what you need and set that to display in the label (or lineEdit).

Every time you call setText(), it completely replaces the current text in the line edit. So your second call to setText() erases the "c=" and replaces it with "5". What Zlatomir is telling you is to look at the QString::arg() methods, and use them to build a QString that contains both "c=" and the result of the calculation, then call setText() once with that formatted string.