making basic calculator in flutter

 import 'package:flutter/material.dart';

import 'package:font_awesome_flutter/font_awesome_flutter.dart';

import 'package:intl/intl.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      title: 'Flutter Demo',
      theme: ThemeData(
        textTheme: TextTheme(
            headline1: TextStyle(
                fontWeight: FontWeight.bold, fontSize: 25, color: Colors.black),
            subtitle1: TextStyle(
                fontSize: 15,
                fontWeight: FontWeight.bold,
                color: Colors.green)),
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatefulWidget{
  @override
  State<StatefulWidget> createState() {
return MyHomeState();
  }

}

class MyHomeState extends State<MyHomePage>{
var no1Controller = TextEditingController();
var no2Controller = TextEditingController();

var result = "";

  var count = 0;
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Stateful widget'),
      ),

      body: Container(
        color: Colors.blue.shade200,
        child: Padding(
          padding: const EdgeInsets.all(8.0),
          child: Center(
            child: Column(
              mainAxisAlignment: MainAxisAlignment.center,
              children: [
                TextField(
                  keyboardType: TextInputType.number,
                  controller: no1Controller,
                ),
                TextField(
                  keyboardType: TextInputType.number,
                  controller: no2Controller,
                ),
                Padding(
                  padding: const EdgeInsets.all(21.0),
                  child: Row(
                    mainAxisAlignment: MainAxisAlignment.spaceAround,
                    children: [
                      ElevatedButton(onPressed: (){
                        var no1 = int.parse(no1Controller.text.toString());
                        var no2 = int.parse(no2Controller.text.toString());
                        var sum =  no1+no2;

                        result = " The sum of $no1 and $no2 is $sum";
                        setState(() {
                        });
                      }, child: Text('Add')),
                      ElevatedButton(onPressed: (){

                        var no1 = int.parse(no1Controller.text.toString());
                        var no2 = int.parse(no2Controller.text.toString());
                        var Difference =  no1-no2;

                        result = " The difference of $no1 and $no2 is $Difference";
                        setState(() {
                        });
                      }, child: Text('Subtract')),
                      ElevatedButton(onPressed: (){

                        var no1 = int.parse(no1Controller.text.toString());
                        var no2 = int.parse(no2Controller.text.toString());
                        var product =  no1*no2;

                        result = " The product of $no1 and $no2 is $product";
                        setState(() {
                        });
                      }, child: Text('Multiply')),
                      ElevatedButton(onPressed: (){

                        var no1 = int.parse(no1Controller.text.toString());
                        var no2 = int.parse(no2Controller.text.toString());
                        var quotient =  no1/no2;

                        result = "The $no1 can be divided by $no2, ${quotient.toStringAsFixed(2)} times";
                        setState(() {
                        });
                      }, child: Text('Divide')),
                    ],
                  ),
                ),
                Padding(padding: const EdgeInsets.all(21),
                child: Text(result, style: TextStyle(fontSize: 25,fontWeight: FontWeight.bold),),)
              ],
            ),
          ),
        ),
      ));
  }

}