字符串"G"未显示 [英] String 'G' is not showing

问题描述

这是client.cpp文件.所以有什么问题?我声明此字符串为'G'，然后输入昵称，然后在此处'cout<<G<<:"<<sbuffer.Message<

P.S .:我不需要发布server.cpp文件，对吗?

So this is the client.cpp file. So what's the problem? I declare this string 'G', I enter the nickname and then here ' cout << G << ":" << sbuffer.Message <

P.S.: I don't think I need to post the server.cpp file, do I?

    #pragma comment(lib, "Ws2_32.lib")

#include <WinSock2.h>
#include <Windows.h>
#include <iostream>
#include <string>

using namespace std;


SOCKADDR_IN addr;

SOCKET sConnect;

string G;

struct Buffer
{
    int ID;
    char Message[256];
};

int ClientThread()

{缓冲区缓冲；

char buffer[sizeof(sbuffer)] = {0};

for(;; Sleep(10))
{
    if(recv(sConnect, buffer, sizeof(sbuffer), NULL))
    {
        memcpy(&sbuffer, buffer, sizeof(sbuffer));
        cout << G << ":" << sbuffer.Message <<endl;
    }
}

return 0;

}

int main()

{system("cls");

{ system("cls");

int RetVal = 0;

WSAData wsaData;
WORD DllVersion = MAKEWORD(2,1);
RetVal = WSAStartup(DllVersion, &wsaData);
if(RetVal != 0)
{
    MessageBoxA(NULL, "Winsock startup failed", "Error", MB_OK | MB_ICONERROR);
    exit(1);
}

sConnect = socket(AF_INET, SOCK_STREAM, NULL);

addr.sin_addr.s_addr = inet_addr("127.0.0.1");
addr.sin_port        = htons(1234);
addr.sin_family      = AF_INET;

cout << "Connect to Masterserver? [ENTER]" <<endl;
getchar();
RetVal = connect(sConnect, (SOCKADDR*)&addr, sizeof(addr));

if(RetVal != 0)
{
    MessageBoxA(NULL, "Could not connect to server", "Error", MB_OK | MB_ICONERROR);
    main();
}
else
{
    string G;
    cout << "Nickname: " << endl;
    cin >> G;

    CreateThread(NULL, NULL, (LPTHREAD_START_ROUTINE) ClientThread, NULL, NULL, NULL);

    for(;; Sleep(10))
    {
        char* buffer = new char[256];
        ZeroMemory(buffer, 256);

        cin >> buffer;
        getchar();

        send(sConnect, buffer, 256, NULL);
    }
}

return 0;

}

推荐答案

您在全局范围顶部声明的字符串G 被字符串G 遮盖了您在 main 范围内声明的内容，因此 ClientThread 方法无法使用您读入的内容.删除主作用域中的声明.

The string G you declare in the global scope at the top is over shadowed by the string G that you declare in the main scope and thus the one you read into isn't available to the ClientThread method. Delete the declaration in the main scope.

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