无聊拿socket写的100以内的加法考试。。。

用的广播IP，所以校内网不用设置，直接在校内网随便找台电脑打开服务端，然后再随便找台电脑打开客户端，然后就可以做100以内的加法了。。。

说明：客户端输入“ready”，服务端会随机发送一条加法算式，客户端发送结果，如果回答正确就显示“Right！”，然后可以输入“ready”做下一道题，否则显示“Wrong！”，需重新输入结果，直到做对为止。。。

还想加点UI，看来要学习多线程了。。。

就是这么蛋疼。。。

 

客户端

#include<stdio.h>

#include<winsock.h>

#pragma comment (lib,"ws2_32.lib")



int main()

{

    char buffer[1025];

    WSADATA data;

    WSAStartup(MAKEWORD(2,0), &data);

    SOCKET mySocket;

    struct sockaddr_in server;

    server.sin_family = AF_INET;

    server.sin_port = htons(7464);

    server.sin_addr.s_addr = inet_addr("10.7.4.255");

    mySocket = socket(AF_INET, SOCK_DGRAM, 0);

    int len = sizeof(server);

    while(scanf("%s", buffer) != EOF)

    {

        sendto(mySocket, buffer, sizeof(buffer), 0,(sockaddr*)&server, len);

        recvfrom(mySocket, buffer, sizeof(buffer), 0, (sockaddr *)&server, &len);

        printf("%s\n", buffer);

    }

    closesocket(mySocket);

    WSACleanup();

    return 0;

}

View Code

服务端

#include <stdio.h>

#include <winsock.h>

#include <string.h>

#include <time.h>

#pragma comment (lib,"ws2_32.lib")



int main()

{

    WSADATA data;

    WSAStartup(MAKEWORD(2, 0), &data);

    SOCKET mySocket;

    sockaddr_in from;

    sockaddr_in local;

    local.sin_family = AF_INET;

    local.sin_addr.s_addr = INADDR_ANY;

    local.sin_port = htons(7464);

    mySocket = socket(AF_INET, SOCK_DGRAM, 0);

    bind(mySocket, (sockaddr *)&local, sizeof(local));

    char right[] = "Right!";

    char wrong[] = "Wrong!";

    char inputError[] = "Input Error!";

    char answer[10];

    char buffer[1025];

    srand(time(NULL));

    int len = sizeof(from);

    while(1)

    {

        recvfrom(mySocket, buffer, sizeof(buffer), 0, (sockaddr *)&from, &len);

        if(strcmp(buffer, "ready") == 0)

        {

            int x = rand() % 100;

            int y = rand() % 100;

            int z = x + y;

            sprintf(answer, "%d", z);

            sprintf(buffer, "%d + %d = ?", x, y);

            sendto(mySocket, buffer, sizeof(buffer), 0, (sockaddr *)&from, len);

            int ok = 0;

            while(!ok)

            {

                recvfrom(mySocket, buffer, sizeof(buffer), 0, (sockaddr *)&from, &len);

                if(strcmp(buffer, answer) == 0)

                {

                    ok = 1;

                    sendto(mySocket, right, sizeof(right), 0, (sockaddr *)&from, len);

                }

                else

                    sendto(mySocket, wrong, sizeof(wrong), 0, (sockaddr *)&from, len);

            }

        }

        else sendto(mySocket, inputError, sizeof(inputError), 0, (sockaddr *)&from, len);

    }

    closesocket(mySocket);

    WSACleanup();

    return 0;

}

View Code