C#之数据类型学习
C#有以下几种数据类型:
数据类型案例以及取值范围:
界面:
选择int时:
选中long时:
选中float时:
选中double时:
选中decimal时:
选中string时:
选中char时:
选中Bool时:
源代码如下:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
namespace SecondWpf
{
/// <summary>
/// MainWindow.xaml 的交互逻辑
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private void ListBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
}
private void Button_Click(object sender, RoutedEventArgs e)
{
Close();//当Quit键被按下以后,退出系统
}
private void ListBoxItem_Selected(object sender, RoutedEventArgs e)
{
int variable,IntMax,IntMin;
variable = 42;
IntMax = (int)Math.Pow(2, 32)-1;
IntMin = (int)Math.Pow(-2, 32);
Value.Text = variable.ToString() ;
Down.Text = IntMin.ToString();
Uper.Text = IntMax.ToString();
}
private void List1_Selected(object sender, RoutedEventArgs e)
{
long LongMax, LongMin,variable;
variable = 42L;
LongMax = (long)Math.Pow(2, 63) – 1;
LongMin = (long)Math.Pow(-2, 63);
Value.Text = variable.ToString();
Down.Text = LongMax.ToString();
Uper.Text = LongMin.ToString();
}
private void List2_Selected(object sender, RoutedEventArgs e)
{
float variable;
string FloatMax, FloatMin;
variable = 0.42f;
FloatMax = “(+-)1.5*10^45”;
FloatMin = “(+-)3.4 * 10 ^ 45”;
Value.Text = variable.ToString();
Down.Text = FloatMax;
Uper.Text = FloatMin;
}
private void List3_Selected(object sender, RoutedEventArgs e)
{
double variable;
string DoubleMax;
string DoubleMin;
variable = 0.43;
DoubleMax = “+-5.0*10^-324”;
DoubleMin = “+-1.7*10^308”;
Value.Text = variable.ToString();
Down.Text = DoubleMax;
Uper.Text = DoubleMin;
}
private void List4_Selected(object sender, RoutedEventArgs e)
{
decimal coin;
string DecimalMax, DecimalMin;
coin = 0.42M;
DecimalMax =”+-1.0*10^-28″;
DecimalMin = “+-7.9*10^28”;
Value.Text = coin.ToString();
Down.Text = DecimalMax.ToString();
Uper.Text = DecimalMin.ToString();
}
private void List5_Selected(object sender, RoutedEventArgs e)
{
string vest;
vest = “你好!”;
Value.Text = vest;
Down.Text = “null”;
Uper.Text = “null”;
}
private void List6_Selected(object sender, RoutedEventArgs e)
{
char grill;
int CharMax, CharMin;
grill = ‘x’;
CharMax = (int)Math.Pow(2, 16) – 1;
CharMin = 0;
Value.Text = grill.ToString();
Down.Text = CharMin.ToString();
Uper.Text = CharMax.ToString();
}
private void List7_Selected(object sender, RoutedEventArgs e)
{
bool teeth;
teeth = false;
Value.Text = teeth.ToString();
Down.Text =”Ture”;
Uper.Text = “Flase”;
}
}
}