diff --git a/homework/renqiangyuan06181128/game.png.png b/homework/renqiangyuan06181128/game.png.png
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diff --git a/homework/renqiangyuan06181128/server/CMakeLists.txt b/homework/renqiangyuan06181128/server/CMakeLists.txt
new file mode 100644
index 0000000000000000000000000000000000000000..af156f4f0d5358650184eee2ad736e1cbbd8b036
--- /dev/null
+++ b/homework/renqiangyuan06181128/server/CMakeLists.txt
@@ -0,0 +1,5 @@
+cmake_minimum_required(VERSION 3.5)
+
+project(server LANGUAGES C)
+
+add_executable(server main.c)
diff --git a/homework/renqiangyuan06181128/server/main.c b/homework/renqiangyuan06181128/server/main.c
new file mode 100644
index 0000000000000000000000000000000000000000..fe94b97cc2df59ab2b5f7cc4d055edebb08859bf
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+++ b/homework/renqiangyuan06181128/server/main.c
@@ -0,0 +1,75 @@
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netinet/ip.h>
+#include <arpa/inet.h>
+#include <signal.h>
+
+int main()
+{
+    //创建监听套接字
+    int listenfd = socket(PF_INET, SOCK_STREAM, 0);
+
+    //本程序的IP地址和端口号
+    struct sockaddr_in addr;
+    addr.sin_family = AF_INET; //IPv4地址（地址类型）
+    addr.sin_port = htons(7); //端口号（网络字节序）,程序使用小于1024的端口号需要使用root权限
+    addr.sin_addr.s_addr = htonl(INADDR_ANY); //绑定本机所有IP地址
+    //addr.sin_addr.s_addr = inet_addr("192.168.1.175"); //指定IP地址进行监听
+
+    //将IP地址与监听套接字绑定
+    int error = bind(listenfd, (struct sockaddr*)&addr, sizeof(addr));
+    if (error)
+    {
+        //打印错误原因
+        perror("bind");
+        return 1;
+    }
+
+    error = listen(listenfd, 3);
+    if (error)
+    {
+        perror("listen");
+        return 2;
+    }
+
+    //忽略SIGPIPE信号，防止发送数据时被OS终止
+    signal(SIGPIPE, SIG_IGN);
+
+    //循环服务器
+    while(1) //等待下一个客户端连接
+    {
+        struct sockaddr_in client_addr;
+        socklen_t addrlen = sizeof(client_addr);
+        //等待客户端连接
+        int connectfd = accept(listenfd, (struct sockaddr*)&client_addr, &addrlen);
+
+        printf("client is connected, ip: %s, port: %d\n", inet_ntoa(client_addr.sin_addr), ntohs(client_addr.sin_port));
+
+        //使用标准IO函数与客户端通信，需要将连接套接字与标准IO文件流绑定
+        FILE* fp = fdopen(connectfd, "r+");
+
+        char line[80];
+        //循环接收客户端的输入
+        while (1)
+        {
+            //从客户端读取一行输入
+            if (fgets(line, sizeof(line), fp) == NULL)
+            {
+                //如果客户端断开连接，退出循环
+                printf("client disconnected\n");
+                break;
+            }
+
+            printf(line);
+
+            //将读出的字符串发送回客户端
+            fprintf(fp, line);
+        }
+
+        //断开和客户端的TCP连接
+        fclose(fp);
+    }
+    return 0;
+}