BlogJava-梦幻之旅-随笔分类-C/C++

字符聊天程序

惠万鹏 — Wed, 19 Aug 2009 10:53:00 GMT

#include <Winsock2.h>
#include <stdio.h>
#pragma comment(lib,"ws2_32.lib")

void main()
{
    WORD wVersionRequested;
    WSADATA wsaData;
    int err;

    wVersionRequested=MAKEWORD(1,1);

    err = WSAStartup(wVersionRequested, &wsaData);
    if (err != 0)
    {

        return;
    }

    if (LOBYTE(wsaData.wVersion)!=1 ||
        HIBYTE(wsaData.wVersion)!=1)
    {
        WSACleanup();
        return;
    }

    SOCKET sockSrv=socket(AF_INET,SOCK_DGRAM,0);

    SOCKADDR_IN addrSrv;
    addrSrv.sin_addr.S_un.S_addr=htonl(INADDR_ANY);
    addrSrv.sin_family=AF_INET;
    addrSrv.sin_port=htons(6000);

    bind(sockSrv,(SOCKADDR*)&addrSrv,sizeof(SOCKADDR));

    char recvBuf[100];
    char sendBuf[100];
    char tempBuf[200];

    SOCKADDR_IN addrClient;
    int len=sizeof(SOCKADDR);

    while(1)
    {
        recvfrom(sockSrv,recvBuf,100,0,(SOCKADDR*)&addrClient,&len);
        if('q'==recvBuf[0])
        {
            sendto(sockSrv,"q",strlen("q")+1,0,(SOCKADDR*)&addrClient,len);
            printf("Chat end!%n");
            break;
        }
        sprintf(tempBuf,"%s say:%s",inet_ntoa(addrClient.sin_addr),recvBuf);
        printf("%s\n",tempBuf);
        printf("Please input data:\n");
        gets(sendBuf);
        sendto(sockSrv,sendBuf,strlen(sendBuf)+1,0,(SOCKADDR*)&addrClient,len);
    }
    closesocket(sockSrv);
    WSACleanup();
}

#include <Winsock2.h>
#include <stdio.h>
#pragma comment(lib,"ws2_32.lib")

void main()
{
    WORD wVersionRequested;
    WSADATA wsaData;
    int err;

    wVersionRequested=MAKEWORD(1,1);

    err = WSAStartup(wVersionRequested, &wsaData);
    if (err != 0)
    {

        return;
    }

    if (LOBYTE(wsaData.wVersion)!=1 ||
        HIBYTE(wsaData.wVersion)!=1)
    {
        WSACleanup();
        return;
    }

    SOCKET sockClient=socket(AF_INET, SOCK_DGRAM,0);

    SOCKADDR_IN addrSrv;
    addrSrv.sin_addr.S_un.S_addr=inet_addr("127.0.0.1");
    addrSrv.sin_family=AF_INET;
    addrSrv.sin_port=htons(6000);
     char recvBuf[100];
     char sendBuf[100];
     char tempBuf[200];

     int len=sizeof(SOCKADDR);

     while(1)
     {
         printf("please input data:\n");
         gets(sendBuf);
         sendto(sockClient,sendBuf,strlen(sendBuf)+1,0,
             (SOCKADDR*)&addrSrv,len);
         recvfrom(sockClient,recvBuf,100,0,(SOCKADDR*)&addrSrv,&len);
         if('q'==recvBuf[0])
         {
             sendto(sockClient,"q",strlen("q")+1,0,
                 (SOCKADDR*)&addrSrv,len);
             printf("Chat end!\n");
             break;
         }
         sprintf(tempBuf,"%s say:%s",inet_ntoa(addrSrv.sin_addr),recvBuf);
         printf("%s\n",tempBuf);
     }
     closesocket(sockClient);
     WSACleanup();
}

惠万鹏 2009-08-19 18:53 发表评论

TCP通信

惠万鹏 — Wed, 19 Aug 2009 10:52:00 GMT

#include <Winsock2.h>
#include <stdio.h>
#pragma comment(lib,"ws2_32.lib")

void main()
{
    WORD wVersionRequested;
    WSADATA wsaData;
    int err;

    wVersionRequested = MAKEWORD( 1, 1 );

    err = WSAStartup( wVersionRequested, &wsaData );
    if ( err != 0 ) {

        return;
    }

    if ( LOBYTE( wsaData.wVersion ) != 1 ||
        HIBYTE( wsaData.wVersion ) != 1) {
            WSACleanup( );
            return;
    }
    SOCKET socksrv=socket(AF_INET,SOCK_STREAM,0);

    SOCKADDR_IN addrsrv;
    addrsrv.sin_addr.S_un.S_addr=htonl(INADDR_ANY);
    addrsrv.sin_family=AF_INET;
    addrsrv.sin_port=htons(4444);

    bind(socksrv,(sockaddr*)&addrsrv,sizeof(SOCKADDR));

    listen(socksrv,5);

    SOCKADDR_IN addrclient;
    int len=sizeof(SOCKADDR);

    while(1)
    {
        SOCKET sockconn=accept(socksrv,(SOCKADDR*)&addrclient,&len);
        char sendbuf[100];
        sprintf(sendbuf,"welcome %s to TCP server",inet_ntoa(addrclient.sin_addr));
        send(sockconn,sendbuf,strlen(sendbuf)+1,0);
        char recvbuf[100];
        recv(sockconn,recvbuf,100,0);
        printf("%s\n",recvbuf);
        closesocket(sockconn);

    }

}

惠万鹏 2009-08-19 18:52 发表评论

UDP 通信

惠万鹏 — Wed, 19 Aug 2009 10:52:00 GMT

惠万鹏 2009-08-19 18:52 发表评论

SOCKET

惠万鹏 — Wed, 19 Aug 2009 10:51:00 GMT

#include <Winsock2.h>
#include <stdio.h>
#pragma comment(lib,"ws2_32.lib")

void main()
{
    WORD wVersionRequested;
    WSADATA wsaData;
    int err;

    wVersionRequested = MAKEWORD(1, 1);

    err = WSAStartup( wVersionRequested, &wsaData );
    if ( err != 0 )
    {
        return;
    }

    /* 判断是否是得到的版本 */
    if ( LOBYTE( wsaData.wVersion ) != 1 ||
        HIBYTE( wsaData.wVersion ) != 1 )
    {
            /* 终止作用 */
            WSACleanup( );
            return;
    }

    /* 创建套接字 */
    SOCKET sockSrv=(AF_INET,SOCK_STREAM,0);

    SOCKADDR_IN addrSrv;
    addrSrv.sin_addr.S_un.S_addr=htonl(INADDR_ANY);
    addrSrv.sin_family=AF_INET;
    addrSrv.sin_port=htons(6000);

    bind(sockSrv,(SOCKADDR*)&addrSrv,sizeof(SOCKADDR));
    listen(sockSrv,5);

    SOCKADDR_IN addrClient;
    int len=sizeof(SOCKADDR);

    while(1)
    {
        SOCKET sockConn=accept(sockSrv,(SOCKADDR*)&addrClient,&len);
        char sendBuf[100];
        sprintf(sendBuf,"Welcome %s to hhtp://www.sunxin.org",inet_ntoa(addrClient.sin_addr));
        send(sockConn,sendBuf, strlen(sendBuf)+1,0);
        char recvBuf[100];
        recv(sockConn,recvBuf,100,0);
        printf("%s\n",recvBuf);

    }

}

惠万鹏 2009-08-19 18:51 发表评论

Helloworld

惠万鹏 — Wed, 19 Aug 2009 10:51:00 GMT

class CMyApp:public CWinApp
{
public:
    virtual BOOL InitInstance();
};

class CMainWindow:public CFrameWnd
{
public:
    CMainWindow();
protected:
    afx_msg void OnPaint();
    DECLARE_MESSAGE_MAP()
};

#include <afxwin.h>
#include "Hello.h"
CMyApp myAPP;

BOOL CMyApp::InitInstance()
{
    m_pMainWnd = new CMainWindow;
       m_pMainWnd->SetIcon(LoadIcon(IDI_ICON1),TRUE);
    m_pMainWnd->ShowWindow(m_nCmdShow);
    m_pMainWnd->UpdateWindow();
    return TRUE;
}

BEGIN_MESSAGE_MAP(CMainWindow,CFrameWnd)
    ON_WM_PAINT()
END_MESSAGE_MAP()

CMainWindow::CMainWindow()
{
    Create(NULL,_T("aaa"));
}

void CMainWindow::OnPaint()
{
    CPaintDC dc(this);
    CRect rect;
    GetClientRect(&rect);
    dc.DrawText(_T("ad"),-1,&rect,DT_SINGLELINE|DT_CENTER|DT_VCENTER);
}

Project Setting
General
Use of MFC 选择 Use MFC in a Shared DLL

惠万鹏 2009-08-19 18:51 发表评论

Hello world应该注意的问题

惠万鹏 — Wed, 19 Aug 2009 10:50:00 GMT

#include <iostream>
using namespace std;
void main()
{
    cout << "hello world!";
    int index;
    cin >> index;
}

注意,是c风格的,要么是:
#include
using namespace std;

要么是:
#include
这时是不能用using namespace std;这句话的，否则会出现你遇到的问题:
fatal error C1083: 无法打开包括文件:“iostream.h”: No such file or directory

在标准C++里面,是不用#include 这种形式了,而要使用#include
在VC6是在C++标准出来前发布的,所以它可以使用#include 这形式.

惠万鹏 2009-08-19 18:50 发表评论

七种访问控件的方式

惠万鹏 — Wed, 19 Aug 2009 10:50:00 GMT

void CTestDlg::OnBnClickedBtnAdd()
{
    // TODO: 在此添加控件通知处理程序代码
    /*
    if(m_blsCreate == FALSE)
    {
        m_btn.Create(_T("Huyvanpull"),BS_DEFPUSHBUTTON | WS_VISIBLE | WS_CHILD,
            CRect(0,0,100,100),this,123);
        m_blsCreate=TRUE;
    }
    else
    {
        m_btn.DestroyWindow();
        m_blsCreate=FALSE;
    }
    */

    /*
    int num1, num2, num3;
    char ch1[10],ch2[10],ch3[10];

    GetDlgItem(IDC_EDIT1)->GetWindowText((LPTSTR)(LPCTSTR)ch1,10);
    GetDlgItem(IDC_EDIT2)->GetWindowText((LPTSTR)(LPCTSTR)ch2,10);

    num1=atoi(ch1);
    num2=atoi(ch2);
    num3=num1+num2;
    itoa(num3,ch3,10);
    GetDlgItem(IDC_EDIT3)->SetWindowText((LPTSTR)(LPCTSTR)ch3);
    */

    /*
    int num1, num2, num3;
    char ch1[10],ch2[10],ch3[10];

    GetDlgItemText(IDC_EDIT1,(LPTSTR)(LPCTSTR)ch1,10);
    GetDlgItemText(IDC_EDIT2,(LPTSTR)(LPCTSTR)ch2,10);
    num1=atoi(ch1);
    num2=atoi(ch2);
    num3=num1+num2;
    itoa(num3,ch3,10);
    SetDlgItemText(IDC_EDIT3,(LPTSTR)(LPCTSTR)ch3);
    */

    /*
    int num1, num2, num3;
    num1=GetDlgItemInt(IDC_EDIT1);
    num2=GetDlgItemInt(IDC_EDIT2);
    num3=num1+num2;
    SetDlgItemInt(IDC_EDIT3,num3);
    */

    /*
    //默认为真,指示数据正在被获取
    UpdateData();
    m_num3=m_num1+m_num2;
    //设置成假,指示数据正在被初始化
    UpdateData(FALSE);
    */

    /*
    int num1=0, num2=0, num3=0;
    TCHAR ch1[10],ch2[10],ch3[10];

    m_edit1.GetWindowText(ch1,10);
    m_edit2.GetWindowText(ch2,10);

    num1=_ttoi(ch1);
    num2=_ttoi(ch2);
    num3=num1+num2;
    _itot(num3,ch3,10);

    //CString h;
    //int a=_ttoi(h);
    //CString h;
    // h.Format(_T("%d"),num3);
    m_edit3.SetWindowText(ch3);
    */

    //GetDlgItem(IDC_EDIT1)->SendMessage(WM_GETTEXT,10,(LPARAM)ch1);
    /*
    int num1=0, num2=0, num3=0;
    TCHAR ch1[10],ch2[10],ch3[10];
    m_edit1.SendMessage(WM_GETTEXT,10,(LPARAM)ch1);
    m_edit2.SendMessage(WM_GETTEXT,10,(LPARAM)ch2);

    num1=_ttoi(ch1);
    num2=_ttoi(ch2);
    num3=num1+num2;
    _itot(num3,ch3,10);

    m_edit3.SendMessage(WM_SETTEXT,10,(LPARAM)ch3);
    */
    int num1=0, num2=0, num3=0;
    TCHAR ch1[10],ch2[10],ch3[10];
    SendDlgItemMessage(IDC_EDIT1,WM_GETTEXT,10,(LPARAM)ch1);
    SendDlgItemMessage(IDC_EDIT2,WM_GETTEXT,10,(LPARAM)ch2);

    num1=_ttoi(ch1);
    num2=_ttoi(ch2);
    num3=num1+num2;
    _itot(num3,ch3,10);

    SendDlgItemMessage(IDC_EDIT3,WM_SETTEXT,10,(LPARAM)ch3);
}

惠万鹏 2009-08-19 18:50 发表评论

消息分类

惠万鹏 — Wed, 19 Aug 2009 10:49:00 GMT

1.标准消息
除WM_COMMAND之外,所有以WM_开头的消息.从CMnc派生的类,都可以接收此类消息.

2. 命令消息
来自菜单,加速键或工具栏、加速或工具栏按键。这类消息都以WM—COOMMAND呈现.在MFC中,通过菜单项标识(ID)来区分不同的命令消息.在SDK中,通过消息的wParam 参数识别.

3.通告消息
由控件产生的消息,例如,按钮的单点击,列表框的选择均产生些类消息.为的是向其父窗口(通常是对话框)通知事件的发生,这类消息也是是WM_COMMAND形式呈现.从CCmdTarget派生的类,都可以接收到这类消息.

惠万鹏 2009-08-19 18:49 发表评论

vs 快键

惠万鹏 — Wed, 19 Aug 2009 10:49:00 GMT

CTRL+L 删除整行
CTRL+U 变小写
CTRL+SHIFT+U变大写

惠万鹏 2009-08-19 18:49 发表评论

画线程序

惠万鹏 — Wed, 19 Aug 2009 10:48:00 GMT

1. HDC
    HDC是指窗体,控件的句柄,是长整类型.
    这是windows编程里很重要的一个类型,它唯一标识了一个对象.比如窗口,按钮,视图等,也就是一个代号.
    另外它和C++没有什么直接的关系,HDC是windows系统API中定义的一个数据类型.
    注意,GetDC()得到的句柄必须用ReleaseDC()函数释放！而用Create建立的句柄必须用DeleteDC()释放.

2. BOOL MoveToEx(HDC hdc, int x,int y,LPPOINT lppt).
    hdc是当前设备的句柄.
    x是X轴的位置,水平方向,一般原点是在屏幕左上角的位置.
    y是Y轴的位置,垂直方向.
    lppt是移动前的坐标位置.

3.BOOL WINAPI LineTo(HDC hdc, int x, int y);
    hdc是当前设备的句柄.
   x是X轴的位置,水平方向,一般原点是在屏幕左上角的位置.
   y是Y轴的位置,垂直方向.

// CDrawView 消息处理程序
void CDrawView::OnLButtonDown(UINT nFlags, CPoint point)
{
    // TODO: 在此添加消息处理程序代码和/或调用默认值
    m_ptOrigin=point;
    CView::OnLButtonDown(nFlags, point);
}

void CDrawView::OnLButtonUp(UINT nFlags, CPoint point)
{
    /*********************************************
    HDC hdc;
    hdc=::GetDC(m_hWnd);
    MoveToEx(hdc,m_ptOrigin.x,m_ptOrigin.y,NULL);
    LineTo(hdc,point.x,point.y);
    ::ReleaseDC(m_hWnd,hdc);
    CView::OnLButtonUp(nFlags, point);
    **********************************************/

    /*********************************************
    CDC *pDC=GetDC();
    pDC->MoveTo(m_ptOrigin);
    pDC->LineTo(point);
    ReleaseDC(pDC);
    CView::OnLButtonUp(nFlags, point);
    **********************************************/

    /*********************************************
    CClientDC dc(this);
    //CClientDC dc(GetParent());
    dc.MoveTo(m_ptOrigin);
    dc.LineTo(point);
    CView::OnLButtonUp(nFlags, point);
    **********************************************/

    /*********************************************
    CWindowDC dc(GetDesktopWindow());
    dc.MoveTo(m_ptOrigin);
    dc.LineTo(point);
    CView::OnLButtonUp(nFlags, point);
    **********************************************/

    /*********************************************
    CPen pen(PS_DOT,1,RGB(20,255,0));
    CClientDC dc(this);
    //把画笔选入设备描述表
    CPen *pOldPen=dc.SelectObject(&pen);
    dc.MoveTo(m_ptOrigin);
    dc.LineTo(point);
    dc.SelectObject(pOldPen);
    CView::OnLButtonUp(nFlags, point);
    **********************************************/

    /*********************************************
    CBitmap bitmap;
    bitmap.LoadMappedBitmap(IDR_AA1);
    CBrush brush(&bitmap);
    CClientDC dc(this);
    dc.FillRect(CRect(m_ptOrigin,point),&brush);
    CView::OnLButtonUp(nFlags, point);
    **********************************************/

    CClientDC dc(this);
    CBrush *pBrush=CBrush::FromHandle((HBRUSH)GetStockObject(NULL_BRUSH));
    CBrush *pOldBrush=dc.SelectObject(pBrush);
    dc.Rectangle(CRect(m_ptOrigin,point));
    dc.SelectObject(pOldBrush);
    CView::OnLButtonUp(nFlags, point);
}

惠万鹏 2009-08-19 18:48 发表评论

C++ 数组和指针

惠万鹏 — Tue, 07 Jul 2009 15:19:00 GMT

#include <iostream>
using namespace std;
void main()
{
    int iArray[]={0,1,2,3,4,5,6,7,8,9};
    for(int i=0;i<10;i++)
    {
        cout<<iArray[i]<<endl;
        iArray[i]=123;
    }

    int *pBegin = iArray;
    int *pEnd = iArray+10;
    for(;pBegin!=pEnd;++pBegin)
    {
        cout<<*pBegin<<endl;
    }
}

惠万鹏 2009-07-07 23:19 发表评论

C++ 类

惠万鹏 — Thu, 02 Jul 2009 13:04:00 GMT

Persion.h

#include <string>
using namespace std;

#ifndef PERSION_H
#define PERSION_H
class Persion
{
private:
    string name;
public:
    Persion(string name);
    void say();
};
#endif

Persion.cpp

#include <iostream>
#include <string>
#include "Persion.h"
using namespace std;
Persion::Persion(string name)
{
    this->name=name;
}
void Persion::say()
{
    cout<<"my name is "<<this->name<<endl;
}
void main()
{
    Persion persion("huyvanpull");
    Persion *pPersion = &persion;
    pPersion->say();
}

惠万鹏 2009-07-02 21:04 发表评论

C 数组

惠万鹏 — Wed, 04 Mar 2009 14:30:00 GMT

1.求平均值.
#include
#include
#define LENGTH 5
int main()
{
    int i=0;
    double grades[LENGTH],totalGrade=0;
    printf("请输入%d个学生的成绩:",LENGTH);
    for(i=0;i     {
      printf("\n请输入第%d个学生的成绩:", i+1);
      scanf("%lf",&grades[i]);
      totalGrade = totalGrade + grades[i];
    }
    printf("%0.2lf\n",totalGrade);
    printf("这些学生的均成绩为:%0.2lf", totalGrade/LENGTH);
    getch();
}

惠万鹏 2009-03-04 22:30 发表评论

C 控制台程序小小计算器

惠万鹏 — Thu, 27 Nov 2008 15:39:00 GMT

#include <stdio.h>
/* 计算器小程序 */
int main()
{
    double number1 = 0.0;
    double number2 = 0.0;
    char operation = 0;

    start : printf("\n请入要计算的式子\n");
    scanf(" %lf %c %lf",&number1, &operation, &number2);

    /*  根据操作符号生成结果 */
    switch(operation)
    {
      case '+' :
        printf("=%lf\n", number1 + number2);
        break;
      case '-' :
        printf("=%lf\n", number1 - number2);
        break;
      case '*' :
        printf("=%lf\n", number1 * number2);
        break;
      case '/' :
        if(number2 == 0)
        {
          printf("\n\n\a零不能作除数!\n");
        }
        else
        {
          printf("=%lf\n", number1 / number2);
        }
        break;
      case '%' :
        if((long)number2 == 0)
        {
           printf("\n\n\a零不能作除数!!\n");
        }
        else
        {
           printf("=%ld\n", (long)number1 % (long)number2);
        }
        break;
      default:
        printf("\n\n\a输入参数不合法!\n");
    }

    char isContinue = 0;
    printf("是否继续计算(Y/N): ");
    /* %c前面必须要有一个空格,不然读入的永远都是回车符 */
    scanf(" %c",&isContinue);

    /** 判断是否继续进行运算 */
    if(toupper(isContinue) == 'Y')
    {
      goto start;
    }
    return 0;
}

惠万鹏 2008-11-27 23:39 发表评论

C的数据类型

惠万鹏 — Fri, 03 Oct 2008 07:13:00 GMT

1.整型变量
   int           2byte/4byte
   short       2byte
   long        4byte
   在c里,所有类型的大小都是由编译器决定的.c语言的ANSI标准只要求short<=int<=long.

惠万鹏 2008-10-03 15:13 发表评论

C版HelloWorld

惠万鹏 — Fri, 03 Oct 2008 06:13:00 GMT

#include
void main()
{
printf("Hello,world!");
}
#是预处理指令,即给编译器的指令,要法度它在编译代码之前执行某一些操作.
*.h是头文件,它通常被加在程序的开头.它定义了一些标准C语言库提供的函数的信息.
main函数是程序的入口.

惠万鹏 2008-10-03 14:13 发表评论