111
71页计算器(重点)
计算按键代码
double x = double.Parse(textBox1.Text);
double y = double.Parse(textBox2.Text);
if (radioButton1.Checked)labe4.Text = Convert.Tostring(x + y);
if (radioButton1.Checked)labe4.Text = Convert.Tostring(x - y);
if (radioButton1.Checked)labe4.Text = Convert.Tostring(x * y);
if (radioButton1.Checked)labe4.Text = Convert.Tostring(x / y);
if (radioButton1.Checked)labe4.Text = Convert.Tostring(x % y);
退出按键代码
Application.Exit();
97页最大值
double[] a = new double[5];
double min, max;
Console.WriteLine("请输入五个数:");
for (int i = 0; i <= 4; i++)
a[i] = Convert.ToDouble(Console.ReadLine());
min = a[0];
max = a[0];
for (int i = 1; i <= 4; i++)
{
if (min > a[i])
min = a[i];
if (max > a[i])
max = a[i];
}
Console.Write("数组中的五个数为:");
for (int i = 0; i <= 4; i++)
Console.Write("{0}", a[i]);
Console.WriteLine();
Console.WriteLine("数组中的最大值为:{0},最小值为:{1}", max, min);
144页相册（重点）
上一张按钮
if (btnNext.Enabled == false)
btnNext.Enabled == trur;
pictureBox1.Imge = imageList1.Images[ - - i];
if(i == 0)
btnPre.Enabled = false;
下一张按钮
if (btnNext.Enabled == false)
btnNext.Enabled == trur;
pictureBox1.Imge = imageList1.Images[ + + i];
if(i == imageList1.ImageList1.Images.Count - 1)
btnNext.Enabled = false;
210第四题
namespace sttuu
{
class Program
{
class Student
{
private string name;
private char sex;
private int age;
public string Name //获取属性
{
get { return name; }
set { name = value; }
}
public char Sex
{
get { return sex; }
set { sex = value; }
}
public int Age
{
get { return age; }
set { age = value; }
}
public Student(string name,char sex) //构造两个参数的方法
{
Name = name;
Sex = sex;
}
public Student(string name, char sex, int age) //构造三个参数的方法
{
Name = name;
Sex = sex;
Age = age;
}
public void Introduce()
{
Console.WriteLine("大家好，我叫"+Name+"我是一个"+Sex+"孩，我今年"+Age+"岁");
}
}
static void Main(string[] args)
{
Student s1 = new Student("lily",'女');
s1.Introduce();
Student s2 = new Student("zhangsan",'男',18);
s2.Introduce();
}
}
}
211第五题
namespace bk
{
class Program
{
class Book
{
private string title; //定义两个字段
private int pageNum;
public string Title
{
get { return title; }
set { title = value; }
}
public int PageNum
{
get { return pageNum; }
set { pageNum = value; }
}
public void Detail()
{
Console.WriteLine("书籍的名称为"+Title+"页数为"+PageNum);
}
}
static void Main(string[] args)
{
Book book = new Book();
book.Title = "c#";
book.PageNum = 500;
book.Detail();
}
}
}
