CNSA-212-Personal/ElementaryMathematics/Form1.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics.Eventing.Reader;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace ElementaryMathematics
{
    public partial class Form1 : Form
    {

        private bool isAdd = false;
        private bool isSubtract = false;
        private bool isMultiply = false;
        private bool isDivide = false;
        
        public Form1()
        {
            InitializeComponent();
            //test
        }

        private void groupBox1_Enter(object sender, EventArgs e)
        {
            // throw new System.NotImplementedException();
        }

        private void radioButton1_CheckedChanged(object sender, EventArgs e)
        {
            // throw new System.NotImplementedException();
        }

        private void checkBox1_CheckedChanged(object sender, EventArgs e)
        {
            // throw new System.NotImplementedException();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            // throw new System.NotImplementedException();
        }

        private void ChangeOperator(string op)
        {
            isAdd = false;
            isSubtract = false;
            isMultiply = false;
            isDivide = false;

            if (op == "+")
            {
                isAdd = true;
                lblOperator.Text = op;
            }else if (op == "-")
            {
                isSubtract = true;
                lblOperator.Text = op;
            }else if (op == "*")
            {
                isMultiply = true;
                lblOperator.Text = op;
            }else if (op == "/")
            {
                isDivide = true;
                lblOperator.Text = op;
            }
            else
            {
                lblOperator.Text = "";
            }
            


        }
        
        private void rdoAddition_CheckedChanged(object sender, EventArgs e)
        {
            ChangeOperator("+");
        }

        private void rdoSubtraction_CheckedChanged(object sender, EventArgs e)
        {
            ChangeOperator("-");
        }

        private void rdoMultiplication_CheckedChanged(object sender, EventArgs e)
        {
            ChangeOperator("*");
        }

        private void rdoDivision_CheckedChanged(object sender, EventArgs e)
        {
            ChangeOperator("/");
        }
    }
}