c#程序設(shè)計教程第二版李春葆課后編程題答案

1、輸入a,b求c = a + busing System;using ； namespace Proj2_1一class Programstatic void Main( string 口 args) int a, b, c;("a:");a =();("b:");b =();c = a + b;("a+b=0" , c);:4 Fermi0回-using System;using ;using ;using ;using ;using Proj2_2public partial class Form1 : Form public Fo

2、rm1() InitializeComponent();private void button1_Click( object sender, EventArgs e)一int a, b, c;a =; b =;c = a + b;=(c)； private void Form1_Load( object sender, EventArgs e)一private void textBox2_TextChanged( object sender, EventArgs e) 強制轉(zhuǎn)換P38using System;using ;namespace Proj3_1一class Program stat

3、ic void Main( string 口 args) int i=65,i1,i2;double d = ,d1,d2;char c = 'A' ,c1,c2;("i=0:d5,d=1:f,c=2", i, d, c);i1 = (int )d;MainMainMainMainMainMainMainMainMainMainMainMainMainMainMainMainMainoString(); break ; case "button14" :oString();break ;case "button15"

4、:oString();break ;I JellZOE BSZOIZI SScase "button16" : oString(); break ; =; 模式窗體，無模式窗體調(diào)用using System;using ；using ； using ； using ；using Proj8_1public partial class Forml : Form public Form1()InitializeComponent();private void button1_Click( object sender, EventArgs e)Form myform = new F

5、orm1_1();();o = 1; ="王華"；stud.sex ="男"；stud0.rq =new DateTime(1980,2,10);stud0.sclass ="99091"stud1.no = 2; ="李強stud1.sex ="男"；stud1.rq =new DateTime(1981,10,4);stud1.sclass ="99101"stud2.no = 3; ="張麗stud2.s

6、ex ="女"stud2.rq =new DateTime(1980,3,2);stud2.sclass ="99091"stud3.no = 4; ="汪洋stud3.sex ="男"；stud3.rq =new DateTime(1980,1,5);stud3.sclass ="99101"stud4.no = 5; ="江華stud4.sex ="男"；I -|Z=1 |1:&皿工IllLalloKSLiJstud4.

7、rq =new DateTime(1980,3,10); stud4.sclass =stud5.no = 6; ="李英" ;stud5.sex =stud5.rq =new DateTime(1980,6,2); stud5.sclass =stud6.no = 7; ="胡軍"stud6.sex =stud6.rq =new DateTime(1981,10,9); stud6.sclass =stud7.no = 8; ="劉馳"stud7.sex =stud7

8、.rq =new DateTime(1982,5,2); stud7.sclass =stud8.no = 9; ="宋仁"stud8.sex =stud8.rq =new DateTime(1980,8,3); stud8.sclass =stud9.no = 10; ="許兵"stud9.sex =stud9.rq =new DateTime(1980,11,8); stud9.sclass =o)i = i + 1; if (i >= 10) ("沒有該學號的記錄")；else&

9、quot;99091""女"；"99101""男"；"99091""女"；"99101""男"；"99101""男"；"99091"=studi.(); ame;=studi.sex;=studi.sclass;=studi.(); private void groupBox2_Enter( object sender, EventArgs e) 設(shè)計下拉菜單實現(xiàn)兩個數(shù)的加，減，乘，除。

10、P207using System;using ;using ;using ;using ;using Proj9_1 public partial class Form2 : Form public Form2() InitializeComponent();private void addop_Click( object sender, EventArgs e) int n;n = + ;=();privatevoid subop_Click(object sender,EventArgs e)int n;=();object sender,EventArgs e)private void

11、mulop_Click(一int n; n = * ; =();privatevoid divop_Click(object sender,EventArgs e)int n;n = / ;= ();private void op_Click( object sender, EventArgs e) if ="" | = 0)=false ;else=true ;private void menuStrip1_ItemClicked( object sender, ToolStripItemClickedEventArgs e) 以下是彈出式菜單實現(xiàn)上題using Syst

12、em;using ;using ;using ;using ;using Proj9_1public partial class Form4 : Formpublic Form4()InitializeComponent();private void addop_Click( object sender, int n;n = +EventArgs e)J= ();private void subop_Click( object sender, int n;n = -EventArgs e)J= ();privatevoidmulop_Click(objectsender,EventArgse)

13、int n = *n;= ();private void divop_Click( object sender, EventArgs e)一int n; n = / ; =(); private void op_Opened( object sender, EventArgs e)一if ="" | = 0)=false ;else =true ;private void Form4_Load( object sender, EventArgs e) P215設(shè)計一個窗體，用于打開用戶指定文件，并將其放到另外的同類文using System;using ;using ; u

14、sing ; using ; using Proj9_1 public partial class Form5 : Form public Form5() InitializeComponent();private void button1_Click( object sender, EventArgs e)一="» ;="RTF File(*.rtf)|*.RTF|TXT FILE(*.txt)|*.txt"();if !="") switchcase 1:tf類型break ;case 2:xt 類型,；break ;= true

15、 ;private void button2_Click( object sender, EventArgs e) = "RTF File(*.rtf)|*.RTF|TXT FILE(*.txt)|*.txt"if () =switchcase 1: tf 類型,;break ;case 2: xt 類型,;break ; private void Form5_Load( object sender, EventArgs e) =true ;=false ;設(shè)計一個窗體，顯示節(jié)點及子節(jié)點功能P224using System;using ;using ;using ;usin

16、g ;using Proj9_1public partial class Form6 : Form public Form6()InitializeComponent();private void Form6_Load( object sender, EventArgs e)=imageListl; mageindex = 0;0.SelectedImageIndex = 0;0.("一年級")；0.Nodes0.ImageIndex = 1;0.Nodes0.SelectedImageIndex = 1;0.Nodes0.("0701 班");0.No

17、des0.Nodes0.ImageIndex = 2;0.Nodes0.Nodes0.SelectedImageIndex = 2;0.Nodes0.("0702 班");0.Nodes0.Nodes1.ImageIndex = 2;0.Nodes0.Nodes1.SelectedImageIndex = 2;0.("二年級")；0.Nodes1.ImageIndex = 1;0.Nodes1.SelectedImageIndex = 1;0.Nodes1.("0601 班");0.Nodes1.Nodes0.ImageIndex =

18、 2;0.Nodes1.Nodes0.SelectedImageIndex = 2;0.Nodes1.("0602 班");0.Nodes1.Nodes1.ImageIndex = 2;0.Nodes1.Nodes1.SelectedImageIndex = 2;"電子工程系")；();"豹子);0.(0.(0.(0.(0.("老虎");"北極熊”);"狼")；"大象");"犀牛")；"魚類" );1.("鯊魚");

19、1 .("熱帶魚");1 .("金魚");"鳥類" );2 .("天鵝");2 .("貓頭鷹");2 .("翠鳥");private void treeView1_AfterSelect( object sender, TreeViewEventArgs e) string s;5 = imageList1;= imageList2;switch (s)case " 哺乳動物" :" 豹子" , 0);" 老虎" ,

20、 0);" 北極熊 " , 0);"狼 ", 0);" 大象" , 0);" 犀牛" , 0);break ;case " 魚類 " :" 鯊魚" , 0);" 熱帶魚 " , 0);" 金魚" , 0);break ;case " 鳥類 " :" 天鵝" , 0);" 貓頭鷹 " , 0);" 翠鳥" , 0);break ;privatevoidmenu

21、1_Click(objectsender,EventArgse)privatevoidmenu2_Click(objectsender,EventArgse)privatevoidmenu3_Click(objectsender,EventArgse)private void menu4_Click( object sender, EventArgs e)繪制兩個矩形，一個藍色邊框，一個紅色邊框。P254using System;using ;using ;using ;using ;using Proj10_2public partial class Form1 : Formpublic F

22、orm1()InitializeComponent();private void Form1_Paint( object sender, PaintEventArgs e) Graphics gobj=();Pen bluePen = new Pen, 5);Pen redPen = new Pen, 5);Rectangle myRectangle = new Rectangle (50, 50, 100, 80);(bluePen, 30, 20, 100, 80);(redPen, myRectangle);private void Form1_Load( object sender,

23、EventArgs e) 繪制兩個填充餅形構(gòu)成的橢圓。P254using System;using ;using ;using ;using ;using Proj10_2public partial class Form2 : Formpublic Form2()InitializeComponent();private void Form2_Paint( object sender, PaintEventArgs e) Graphics gobj = ();double PI = ;, 30, 30, 130, 80, 0, 300);, 30, 30, 130, 80, 0, -60);

24、private void Form2_Load( object sender, EventArgs e)繪制一個帶邊的填充橢圓P254using System;using ;using ;using ;usingusing ;using Proj10_2public partial class Form3 : Formpublic Form3()InitializeComponent();private void Form3_Paint( object sender, PaintEventArgs e) Graphics gobj = ();HatchBrush myBrush = new H

25、atchBrush , ;Pen myPen = new Pen, 8);(myPen, 20, 20, 150, 100);(myBrush, 20, 20, 150, 100);private void Form3_Load( object sender, EventArgs e)分別在窗體上畫一個直線，一個圓，一個文本P254using System; using ； using ; using ; using ;using Proj10_2FormI畫施1 畫形狀 畫文本一public partial class Form5 :public Form5() InitializeComp

26、onent(); object sender,EventArgs e)Graphics gobj =();object sender,EventArgs e)Graphics gobj =();(30, 30, 100, 100);object sender, EventArgs e)private void button1_Click(一Pen myPen = new Pen (myPen, 30, 30, 120, 120);private void button2_Click( Pen myPen = new Pen (myPen,new Rectangleprivate void bu

27、tton3_Click(一Graphics gobj =();string drawString ="使用 DrawString 方法"；Font myFont = new Font ("黑體"，16);Brush b = new SolidBrushfloat x =;float y =;StringFormat myFormat = new StringFormat ();(drawString, myFont, b, x, y, myFormat); private void Form5_Load( object sender, EventArgs

28、 e) 在列表框中顯示所有學生的學號，姓名，課程名和分數(shù)。按學號次序排歹限P349using System;using ； using ； using ； using ； using Proj13_2一public partial class Forml : Form public Form1() InitializeComponent();private void button1_Click( object sender, EventArgs e)string mystr,mysql;OleDbConnection myconn = new OleDbConnection (); mystr

29、 ="Provider = "+"Data Source = H:C#2005"=mystr;();OleDbCommanmycmd = new OleDbCommaind;mysql ="SELECT student.學號,student. 姓名，score.課程名，score.分數(shù) FROM student,scoreWHERE student.學號=score.學號 ORDER BY student.學號”；=mysql;=myconn;OleDbDataReader myreader =();"學號t姓名t課程名t分數(shù)&quo

30、t;);"="與textBox1文本框綁定起來Binding mybinding2 = new Binding ("Text", mybs,"課程名")；Binding ("Text" , mybs,();Binding mybinding3 = new"分數(shù)")；private voidEventArgs e)button1_Click( object sender,if != 0)();utoSizeMode =11.AutoSizeMode =12.AutoSizeMode =();設(shè)計窗

31、體實現(xiàn)對score表所有記錄通用查找和排序。P350using System;using using ;using ;using ;using ;using Proj13_2 public partial class Form5 : FormInitializeComponent();private void Form5_Load( object sender, EventArgs e)DataView mydv = new DataView(); public Form5()string mystr;OleDbConnection myconn = new OleDbConnection (

32、);DataSet myds = new DataSet ();DataSet myds1 = new DataSet ();DataSet myds2 = new DataSet ();DataSet myds3 = new DataSet ();mystr ="Provider = "+"Data Source = H:C#2005"=mystr;();OleDbDataAdapter myda = new OleDbDataAdapter ("SELECT * FROM score" , myconn);(myds,"

33、score");mydv = "score" .DefaultView;utoSizeMode =11 .AutoSizeMode =;2 .AutoSizeMode =;();"學號")；"課程名");"分數(shù)")；=true; =false=""“private void button1_Click( object sender, EventArgs e) string condstr ="" ;/ 以下根據(jù)用戶輸入求得條件表達式condstrif !="

34、;" )condstr =" 學號 Like '"+ +"%'" ;if !="" )if (condstr !="" )condstr = condstr +" AND 課程名 = '"+ +elsecondstr =" 課程名 = '" + +"'" ;=condstr;/ 過濾 DataView 中的記錄private void button2_Click( object sender, EventA

35、rgs e) =""=""=""private void button3_Click( object sender, EventArgs e) string orderstr ="" ;/ 以下根據(jù)用戶輸入求得排序條件表達式orderstrif !="" )iforderstr = +" ASC" ;elseorderstr = +" DESC" ;=orderstr;/ X:'DataView中記錄排序(1) |輸入 a,b 求 c = a +

36、b固強制轉(zhuǎn)換P38回賦值兩同學信息數(shù)據(jù)，并在圖中輸出結(jié)果 P44(3) |聲明枚舉類型 color ,給兩成員賦值，定 義三個變量，賦值運算輸出相應(yīng)值。P47(4) |位運算符運用P50回輸出常用數(shù)據(jù)類型所用字節(jié)數(shù)P52回求字符串子串在主串的位置P56函ataTime 結(jié)構(gòu)的使用 P59回設(shè)計一個控制臺程序， 定義變量int a, b; float x , y。并求表達式(float ) ( a+b) /+(int)x%(int)y P60團設(shè)計一個控制臺程序，定義變量 int a , b, c;并求表達式(+c-1 ) &b+c/2 P60回聲明一個學生結(jié)構(gòu)類型Stud ,包含學號，姓名，出生日期成員，定義 Stud結(jié)構(gòu)的兩個 學生變量S1, S2并賦值，求他們出售在星期 幾及其相差天數(shù)P60回用if/if else語句顯示用戶輸入數(shù)值的絕對值P62劍判斷年份是否為閏年p63(9) |將用戶輸入的分數(shù)轉(zhuǎn)換為等級ABCD輸出P64恒口編寫程序要求輸入課程后顯示相應(yīng)學分 P65(12)判斷輸入的大于3的正整數(shù)是否為素數(shù)P70(12)用continue 語句對輸入的正數(shù)求和，輸入的負數(shù)忽略，每輸入一個數(shù)，判斷其正負， 負則結(jié)束循環(huán)，進入下一個數(shù)，正數(shù)則加到 總數(shù)上去P71 (13) |滿足12 +22 +n2 <1000的最大的n