[C#/Study] 02. DataType / Overflow

 

구분	형식	크기	범위	비고
Boolean	bool	1	True or False	참, 거짓
정수형	sbytpe	8	-128 ~ 127	signed
	byte	8	0 ~ 255	unsigned
	short	16	-32,768 ~ 32,767	signed
	ushort	16	0 ~ 65,536	unsigned
	int	32	-2,147,483,648 ~ 2,147,483,647	signed
	uint	32	0 ~ 4,294,967,296	unsigned
	long	64	-9,223,372,036,854,755,808 ~ 9,223,372,036,854,755,807	signed
	ulong	64	0 ~ 18,446,744,073,709,551,615	unsigned
실수	float	32	±1.5e-45 ~ ±3.4e38
	double	64	±5.0e-324 ~ ±1.7e308
	decimal	128	(-7.9 x 1028 - 7.9 x 1028) / (100 - 28)
문자형	char	16	0 ~ 65536	UNICODE

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
 
namespace Study_02_DataType
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
 
        private void btnShort_Click(object sender, EventArgs e)
        {
            try
            {
                short sNumber = short.Parse(inputData.Text);
 
                lblShort.Text = sNumber.ToString();
                lblException.Text = "";
            }
            catch (Exception ex)
            {
                lblException.Text = ex.ToString();
            }
        }
 
        private void btnInt_Click(object sender, EventArgs e)
        {
            try
            {
                int iNumber = int.Parse(inputData.Text);
 
                lblInt.Text = iNumber.ToString();
                lblException.Text = "";
            }
            catch (Exception ex)
            {
                lblException.Text = ex.ToString();
            }
        }
 
        private void btnDouble_Click(object sender, EventArgs e)
        {
            try
            {
                double dNumber = double.Parse(inputData.Text);
 
                lblDouble.Text = dNumber.ToString();
                lblException.Text = "";
            }
            catch (Exception ex)
            {
                lblException.Text = ex.ToString();
            }
        }
 
        private void autobtn_Click(object sender, EventArgs e)
        {
            short sNumber = 0;
            int iNumber = 0;
            double dNumber = 0;
 
           if (short.TryParse(inputData.Text, out sNumber))
           {
                lblShort.Text = inputData.Text.ToString();
           }
           else if (int.TryParse(inputData.Text, out iNumber))
            {
                lblInt.Text = inputData.Text.ToString();
            }
            else if (double.TryParse(inputData.Text, out dNumber))
            {
                lblDouble.Text = inputData.Text.ToString();
            }
            else
            {
                lblException.Text = "변환이 불가능합니다.";
            }
        }
    }
}
 

 

Study_02_DataType.zip

0.04MB

 

https://cwkcw.tistory.com/64 

Doridori C# 강의) 2.DataType과 Overflow

 

https://youtu.be/kGQ38vOeI9Q