Visual C实例

1、第一章实例1 Hello, Visual C+/*/ program1.cpp/*#include “iostream.h”#include “stdio.h”int main()printf(“Hello, World!n”);cout<<”Hello,Visual C+ 6.0!n”;return 0;实例2 Welcome to Win32!/*/ program2.cpp/*#include “stdafx.h”#include “iostream.h”int main(int argc,char *argv)char str20;cout<<”Please e

2、nter your name:”;cin>>str;cout<<str<<”, Welcome to Win32!n”;return 0;实例4 程序调试/*/ program4.cpp/*#include “stdafx.h”include “iostream.h”int ain()int main()int max,a,b,c;cout<<”依次输入三个整数,本程序将对其比较大小,并输出最大的数.n”;cout<<”第一个数”;cin>>a;cout<<”第二个数”;cin>>b;cout<

3、;<”第三个数”;cin>>c;if (a>b)max=a;else max=b;if (c>max)max=c;cut<<”最大的数是: “<<max<<endl;return 0;第二章实例5 进入C+的密码/*/ program5.cpp/*#include “iostream.h”int main()int key;cout<<”请输入密码: “;cin>>key;if (key=1234)cout<”密码正确! “<<endl;cout<<”欢迎进入C+ !”<

4、;<endl;return 1;实例6 有提示音的密码程序/*/ program6.cpp/*#include “iostream.h”int main()int key;cout<<”请输入密码: ”;cin>>key;if (key=0)cout<”密码正确! “<”n”;cout<<”欢迎进入C+ !”<<”n”;cout<<”07”<<”n”;return 1;实例7 闰年的计算/*/ program7.cpp/*#include “iostream.h”int main()int year;in

5、t f1,f2,f3;cout<<”请输入年份: ”;cin>>year;f1=(int)(year/4)*4=year;f2=(int)(year/100)*100=year;f3=(int)(year/400)*400=year;if (f1&&(!f2)|f2&&f3) cout<<year<<”年是闰年. n”;elsecout<<year<<”年不是闰年. n”;return 1;实例9 多用户密码程序/*/ program9.cpp/*#include “iostream.h”i

6、nt main()int key;cout<<”请输入密码: “;cin>>key;if (key=123) cout<<”欢迎您, Wizard.n”;else if (key=246)cout<<”欢迎您, Joe.n”;else if (key=999)cout<<”欢迎您, David.n” else cout<<”密码错误!n”<<”程序终止! 07n”;return 1;实例10 另一种多用户密码程序/*/ program10.cpp/*#include “iostream.h”int main()

7、int key;cout<<”请输入密码: “;cin>>key;switch(key) case 123:cout<<”欢迎您, Wizard.n”;break;case 246:cout<<”欢迎您, Joe.n”;break;case 999: cout<<”欢迎您, David.n”;break;default:cout<<”密码错误!n”<<”程序终止! 07n”;break;return 1;实例11 成绩分段统计/*/ program11.cpp/*#include “iostream.h”int

8、 main()int cj;cout<<”请输入分数: ”;cin>cj;switch(cj)case 90: cout<<”90100有12人.n”;case 80: cout<<”8090有25人.n”;case 70: cout<<”7080有17人.n”;case 60: cout<<”6070有5人.n”;default:cout<<”60分以下有7人.n”;return 1;实例12 连续数字的求和/*/ program12.cpp/*#include “iostream.h”int main()cons

9、t int MAX=100;int n,s;s=0;n=1;while (n<=MAX)s=s+n;n+;cout<<”1100的总和为 ”<<s<<”n”;return 1;实例13 韩信点兵/*/ program13.cpp/*#include “iostream.h”int main()int i,a,b,c;for (i =1; i <100; i +)a= i %3;b= i %5;c= i %7;if (a=1 && b=0 && c=5) cout<< i <<endl;ret

10、urn 1;实例14 百鸡问题/*/ program14.cpp/*#include “iostream.h”int main()int x,y,z;for (x=1;x<20;x+) for y=1;y<33;y+) z=100-x-y; if (5*x+y*3+z/3=100&&z%3=0) cout<<”公鸡有”<<x<<”只,母鸡有”<<y<<”只,小鸡有”<<z<<”只.n”;return 1;实例15 英文字符的统计/*/ program15.cpp/*#include

11、“iostream.h”#iinclude “stdio.h”int main()int n=0;char c;for (;)c=getchar();if (c=n)break;if (c>=a && c<=z|c>A && c<=Z) n+;cout<<”总计输入了”<<n<<”个英文字符.n”;return 1;实例16 英文字符的统计/*/ program16.cpp/*#include “iostream.h”#iinclude “stdio.h”int main()int k,s,v,n;s=

12、0;n=0;do cout<<”请输入成绩: ”; cin>>k;if (k<0|k>100) cout<<”输入错误!重新输入: 07n “; continue;s+=k;n+; while(1);v=s/n;cout<<”共输入”<<n<<”人,平均成绩是”<<endl;return 1;实例17 最大值与最小值/*/ program17.cpp/*#include “iostream.h”int max(int,int);int min(int,int);int main()int k,kma

13、x,kmin;kmax=0;kmin=0;docout<<”请输入数据: “;cin>>k;if (9999=k)break;kmax=max(kmax,k);kmin=min(kmin,k);while(1);cout<<”最大值为”<<kmax<<endl;cout<<”最小值为”<<kmin<<endl;return 1;int max(int a,int b) return(a>b?a:b);int min(int a,int b) return(a<b?a:b);实例18 数的

14、阶乘/*/ program18.cpp/*#include “iostream.h”int fac(int);int main()int n;long int N;cout<<”请输入一个整数: “;cin>>n;N=fac(n);Cout<<N<<endl;Return 1;int fac(int n)long int s;if (n=1) return 1;s=n*fac(n-1);return s;实例19 菲波那契数列/*/ program19.cpp/*#include “iostream.h”int f(int);int main()

15、int n,s,I;cout<<”请输入月数: “;cin>>n;for (I=1;I<=n;I+)s=f(i);cout<<”第”<<I<<个月共有”<<s<<”对兔子”<<endl;return;int f(int n)int s;if (n=1|n=2) return 1;s=f(n-1)+f(n-2);return s;实例21 奇偶有别/*/ program21.cpp/*#include “iostream.h”int main()const int MAX=100;int aMA

16、X;int bMAX;int i,k,x,y;x=0;y=0;do cin>>k; if (k=9999) break; if (k%2=0) ax=k;x+;elseby=k;y+;while (1);for (i=0; i<x; i+)cout<<ai<<” “;cout<<”n”;for (i=0; i<x; i+)cout<<ai<<” “;return 1;实例23 矩阵转置/*/ program23.cpp/*#include “iostream.h”int main()int a34=1,2,3,

17、4,5,6,7,8,9,10,11,12;int b43;int i,j;for (i=0; i<3; i+) for (j=0;j<4;j+) cout<<aij<<” “;cout<<”n”;cout<<”n”;for (i=0; i<3; i+) for (j=0;j<4;j+) bj i=aij;for (i=0; i<4; i+)for (j=0;j<3;j+) cout <<”n”return 1;实例27 整数转换为字符串/*/ program27.cpp/*#include “ios

18、tream.h”#include “string.h”void itostr(char *,int);void reverse(char *);void itostr(char *str,int n)int sign;char *strcmp=str;if (0>(sign=n) n=-n;do *str+=n%10+0; while (n/=10)>0;if (sign<0) *str+=-;*str=n;reverse(strtmp);void resverse(char *str)char *t;int c;t=str+(strlen(str)-1;for (t;str

19、<t;str+,t)c=*str;str=t;*t=c; void main()int n;char str40;cout<<”输入数字:”;cin>>n;itostr(str,n);cout<<”转换为字符串: ”<<str<<endl;实例29 学生成绩统计/*/ program29.cpp/*#include “iostream.h”typedef struct studentchar name8;int chin;int eng;int math; STUD;void main()STUD a20;int i,j,ch,

20、en,ma;char f=Y;ch=0;en=0;ma=0;i=0;While (f=Y|f=y) cout<<”姓名:”; cin>>;cout<<”语文:”; cin>>si.chin;cout<<”英语:”; cin>>si.eng;cout<<”数学:”; cin>>si.math; cout<<”继续输入? (Y/N) “; cin>>f;i+;for (j=0;j<i;j+) ch=ch+sj.chin; ma=ma+sj.math; en=e

21、n+sj.eng;cout<<”语文平均成绩为”<<ch/i<<endl;cout<<”数学平均成绩为”<<ma/i<<endl;cout<<”英语平均成绩为”<<en/i<<endl;第三章实例34 温度转换类的封装/*/ program34.cpp/*#include “iostream.h”class temperapublic:float cels;float change() return (9*cels)/5+32;void main() tempera c;cout<

22、<”输入摄氏温度值: “;cin>>c.cels;cout<<”转化为华氏温度值为”<<c.change()<<” 度.n ”;p99 例子#include “iostream.h”class ADDpublic:static int sta;int num;void add() sta+;num+;cout<<”sta=”<<sta<<”n”;cout<<”num=”<<num<<”n”;int ADD:sta=0;void main()ADD p1,p2;p1.nu

23、m=0;p2.num=0;p1.add();p2.add();实例35 对象的生存周期/*/ program35.cpp/*#include "iostream.h"class cls_Apublic:cls_A() cout<<"类实例初始化。nn"cls_A()cout<<"类实例被撤销。n"void f()cout<<"调用成员函数。nn"void main()cls_A *p;cout<<"测试开始!nn"p=new cls_A;p->

24、;f();delete p;实例36 不同类型数据的比较/*/ program36.cpp/*#include "iostream.h"int comp(int a,int b) cout<<"int 类型数据比较。最大值为"return(a>b?a:b);float comp(float a,float b) cout<<"float 类型数据比较。最大值为"return(a>b?a:b);double comp(double a, double b) cout<<" dou

25、ble 类型数据比较。最大值为:"return(a>b?a:b);void main() int i1,i2; float f1,f2; double d1,d2;cin>>i1;cin>>i2;cout<<comp(i1,i2)<<endl;cin>>f1;cin>>f2;cout<<comp(f1,f2)<<endl;cin>>d1;cin>>d2;cout<<comp(d1,d2)<<endl;实例39 园与园柱（）/*/ pro

26、gram39.cpp/*#include “iostream.h”class cyclprivate:float PI;public:float r;cycl() PI=float(3.14);r=0;const float area()return PI*r*r;class cylinder:public cyclpublic:float h;cylinder() r=0; h=0;float cubage()return area()*h;void main()cylinder cy;cout<<”输入园柱体半径 r:”;cin>>cy.r;cout<<

27、”输入园柱体高 h:”;cin>>cy.h;cout<<”园柱体底面积为： ”<<cy.area()<<”n”;cout<<”园柱体体积为： ”<<cy.cubage()<<”n”;实例40 园与园柱（2）/*/ program40.cpp/*#include "iostream.h"class cyclprivate:float PI;public:float r;cycl() PI=float(3.14); r=0;cycl(float R) PI=float(3.14); r=R;co

28、nst float area()return PI*r*r;const float girth() return 2*r*PI; ;class cylinder:public cyclpublic:float h;cylinder() h=0;cylinder(float R):cycl (R)cylinder(float R,float H):cycl(R)h=H;const float cubage()return cycl:area()*h;const float area()return girth()*h+(cycl:area()*2;void main()cylinder cy1,

29、cy2(5),cy3(5,10);cout<<"输入园柱体1的半径 r:"cin>>cy1.r;cout<<"输入园柱体1的高 h:"cin>>cy1.h;cout<<"园柱体1的表面积为： "<<cy1.area()<<"n"cout<<"园柱体1的体积为： "<<cy1.cubage()<<"nn"cout<<"输入园柱体2的高 h

30、:"cin>>cy2.h;cout<<"园柱体2的表面积为： "<<cy2.area()<<"n"cout<<"园柱体2的体积为： "<<cy2.cubage()<<"nn"cout<<"园柱体3的底面积为： "<<cy3.cycl:area()<<"n"cout<<"园柱体3的表面积为： "<<cy3.

31、area()<<"n"cout<<"园柱体3的体积为： "<<cy3.cubage()<<"nn"实例41 部门职员信息/*/ program41.cpp/*#include “iostream.h”class departmentpublic:int num;char design10;class employeepublic:int num;char name10;class empl_dept:public department,public employeepublic:void

32、 input()cout<<”依次输入职员编号、姓名、部门编号、部门名称:n”;cin>>employee:num;cin>>name;cin>>department:num;cin>>design;void print() cout<<”职员编号：”<<employee:num<<” 姓名:”<<name; cout<<” 部门编号：”<<department:num<<” 部门名称”<<design;void main()empl_de

33、pt z;z.input();z.print();第四章实例48 窗口输出文字与图形 (P152153)void CProgram48View:OnDraw(CDC *pDC)CProgram48Doc *pDoc=GetDocument( );ASSERT_VALID(pDoc);/TODO: add code for native data here/以下为新增的代码CRect r;GetClientRect(&r);int x=0, y=0;pDC->TextOut(x,y, “在窗口上画一个圆形”);x=r.right/2;y=r.bottom/2;pDC->Ell

34、ipse(x-100,y-100,x+100,y+100);实例49 应用程序的创建与撤销 (P162163)int CMainFrame:OnCreate(LPCREATESTRUCT lpCreateStruct)/添加下面这一行语句，显示对话框MessageBox(“准备建立应用程序”, “创建程序”,MB_OK|MB_ICONEXCLAMATION);If (CFrameWnd:OnCreate(lpCreateStruct)= -1) return 1;void CMainFrame:OnClose( )/TODO:Add your message handler code here

35、 and/or call defaultMessageBox(“准备销毁程序窗口”, “撤销窗口”,MB_OK|MB_ICONEXCLAMATION);CFrameWnd:OnClose( );实例50 键盘字符的输入与显示 (P164166)CProgram50Doc:CProgram50Doc( )/TODO: add one-time construction code hereText=”;void CProgram50View:OnChar(UNIT nChar,UINT nRepCnt, UINT nFlags)/TODO:Add your message handler code

36、 here and/or call defaultCProgram50Doc *pDoc=GetDocument( );ASSERT_VALID(pDoc);if (nChar=b) pDoc->Text.Delete(pDoc->Text.GetLength( )-1,1);else pDoc->Text+=nChar;Invalidate( );Cview:OnChar(nChar, nRepCnt,nFlags);void CProgram50View:OnDraw(CDC *pDC)CProgram50Doc *pDoc=GetDocument( );ASSERT_V

37、ALID(pDoc);/TODO: add draw code for native data hereCRect r;GetClientRect(&r);pDC->DrawText(pDoc->Text,r,DT_WORDBREAK|DT_CENTER);实例51 区域探测 (P168171)void CProgram51View:OnLButtonUp(UINT nFlags,CPoint point)/TODO: Add your message handler code here and/or call defaultCRect r;GetClientRect(&a

38、mp;r);char *s;if (point.x>r.right/2) if (point.y>r.bottom/2)s=”你现在位于第四区”;elses=”你现在位于第一区”;else if (point.y>r.bottom/2)s=”你现在位于第三区”;else s=”你现在位于第二区”;MessageBox(s,”位置提示”,MB_OK|MB_ICONEXCLAMATION);CView:OnLButtonUp(nFlags,point)；void CProgram51View:OnDraw(CDC *pDC) CProgram51Doc *pDoc=GetDocu

39、ment( );ASSERT_VALID(pDoc);/TODO: add draw code for native data herepDC->TextOut(mPoint.x,mPoint.y,pDoc->Text);void CProgram51View:OnMouseMove(UINT nFlags,CPoint point)/TODO: Add your message handler code here and/or call defaultCProgram51Doc *pDoc=GetDocument( );ASSERT_VALID(pDoc);pDoc->Te

40、xt=IntToCStr(point.x)+”,”+IntToCStr(point.y);mPoint.x=point.x+20;mPoint.y=point.y;Invalidate( );CView:OnMouseMove(nFlags,point);Cstring CProgram51View:IntToCStr(int Num)int i;CString strnum=”;char c;while (Num>0)i=Num%10;c=0;c=c+i;strnum+=(char)c;Num=Num/10;strnum.MakeReverse( );return strnum;实例5

41、2 滚动字幕 (P172173)CProgram52View:CProgram52View()/TO: add construction code herems=0;x=0;CProgram52View:OnCreate(LPCREATESTRUCT lpCreateStruct)if (CView:OnCreate(lpCreateStruct)=-1)/TODO: Add your specialized creation code hereSetTimer(1,10,NULL);return 0;void CProgram52View:OnTimer(UNIT nIDEvent)/TOD

42、O: Add your message handler code and/or call default/InvalidateRect(NULL,ture);/UpdateWindow();ms+=10;x=x+1;Invalidate();CView:OnTimer(10);void CProgram52View:OnDraw(CDC *pDC)/TODO: add draw code for native data hereCRect r;GetClientRect(&r);CString s;s.Format(“字幕已运行%d毫秒”,ms);if (x>r.right-r.

43、left)x=0;pDC->TextOut(x,r.bottom/2,”Visual C+ 6.0 “);pDC->TextOut(x,r.bottom/2+20,s);实例53园的移动轨迹 (P175179)void CProgram53View:OnDraw(CDC *pDC)CProgram53Doc*pDoc=GetDocument();ASSERT VALID(pDoc);/TODO: add draw code for native data hereDrawEps();void CPprogram53View:OnInitialUpdate()CScrollView:

44、OnInitialUpdate();CSize sizeTotal;/TODO: calculate the total size of this viewsizeTotal.cx=1000;sizeTotal.cy=800;SetScrollSizes(MM_TEXT,sizeTotal);void CProgram53View:DrawEps()CDC *pDC=GetDC();CRect r;GetClientRect(&r);int x=0,y=0;x=r.right/2;y=r.bottom/2;pDC->Ellipse(x-50,y-50,x+50,y+50);voi

45、d CProgram53View:OnHScroll(UNIT nSBCode,UNIT nPos,CScrollBar *pScrollBar)/TODO: Add your message handler code here and/or call defaultDrawEps();CScrollView:OnHScroll(nSBCode,nPos,pScrollBar);void CProgram53View:OnVScroll(UNIT nSBCode,UNIT nPos,CScrollBar *pScrollBar)/TODO: Add your message handler c

46、ode here and/or call defaultDrawEps();CScrollView:OnVScroll(nSBCode,nPos,pScrollBar);void CProgram53View:OnKeyDown(UNIT nChar, UINT nRepCnt,UINT nFlags)/TODO: Add your message handler code and/or call defaultswitch(nChar)case VK_NUMPAD7:OnVScroll(SB_LINEUP,0,NULL);OnHScroll(SB_LINELEFT,0,NULL);break

47、;case VK_NUMPAD1:OnVScroll(SB_LINEDOWN,0,NULL);OnHScroll(SB_LINELEFT,0,NULL);break;case VK_NUMPAD8:OnVScroll(SB_LINEUP,0,NULL);break;case VK_NUMPAD2:OnVScroll(SB_LINEDOWN,0,NULL);break;case VK_NUMPAD6:OnHScroll(SB_LINERIGHT,0,NULL);break;case VK_NUMPAD4:OnHScroll(SB_LINELEFT,0,NULL);break;case VK_NU

48、MPAD9:OnVScroll(SB_LINEUP,0,NULL);OnHScroll(SB_LINERIGHT,0,NULL);break;case VK_NUMPAD3:OnVScroll(SB_LINEDOWN,0,NULL);OnHScroll(SB_LINERIGHT,0,NULL);break;case VK_NUMPAD5:Invalidate();break;CScrollView:OnKeyDown(nChar,nRepCnt,nFlags);实例54 应用程序的生存周期 (P180182)int CMainFrame:OnCreate(LPCREATESTRUCT lpCreateStruct)MessageBox(“收到WM_CREATE消息! “,”提示信息”,MB_OK);If (CFrameWnd:OnCreate(lpCreateStruct)=-1)return 1;void CMainFrame:OnClose()/TODO:Add your message handler code here and/or call defaultMessageBox(“收到WM_CLOSE消息! “,”