diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..cdf9caf
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,7 @@
+{
+    "files.associations": {
+        "types.h": "c",
+        "stat.h": "c",
+        "unistd.h": "c"
+    }
+}
\ No newline at end of file
diff --git a/Code/copy.txt b/Code/copy.txt
new file mode 100644
index 0000000..e69de29
diff --git a/Code/io.c b/Code/io.c
new file mode 100644
index 0000000..b2f01ca
--- /dev/null
+++ b/Code/io.c
@@ -0,0 +1,67 @@
+/****************************************************************
+题目：
+实现文件的拷贝，将一个有数据的文件拷贝它的数据到另一个空白的文件里面。
+*****************************************************************
+先在/home/xk/目录下创建一个origin.txt文件和一个copy.txt文件
+然后在origin.txt文件中写入一些数据
+*****************************************************************/
+
+#include<stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <string.h>
+
+int main()
+{
+    int open_status;
+    int read_status;
+    int write_status;
+    int close_status;
+    char buf[256] = {0};
+
+    //1、打开源文件
+    open_status = open("/home/xk/origin.txt", O_RDWR);
+    if(open_status == -1)
+        printf("打开源文件失败\n");
+    else
+        printf("打开源文件成功\n");
+    
+    //2、拷贝源文件数据
+    read_status = read(open_status, buf, sizeof(buf) - 1);
+    if(read_status > 0)
+        printf("已复制源文件内容为:%s", buf);
+    else
+        return -1;
+        
+    //3、关闭源文件
+    close_status = close(open_status);
+    if(close_status == 0)
+        printf("关闭源文件成功\n\n");
+    else
+        printf("关闭源文件失败\n\n");
+
+    //4、打开目标文件
+    open_status = open("/home/xk/copy.txt", O_RDWR);
+    if(open_status == -1)
+        printf("打开目标文件失败\n");
+    else
+        printf("打开目标文件成功\n");
+
+    //5、写入数据到目标文件
+    write_status = write(open_status, buf, strlen(buf));
+    if(write_status > 0)
+        printf("复制成功，有%d个字符\n", write_status);
+    else
+        return -1;
+
+    //6、关闭目标文件
+    close_status = close(open_status);
+    if(close_status == 0)
+        printf("关闭目标文件成功\n");
+    else
+        printf("关闭目标文件失败\n");
+    
+    return 0;
+}
\ No newline at end of file
diff --git a/Code/io2.c b/Code/io2.c
new file mode 100644
index 0000000..7843990
--- /dev/null
+++ b/Code/io2.c
@@ -0,0 +1,56 @@
+/************************************************
+使用标准IO完成文件拷贝
+************************************************/
+#include<stdio.h>
+
+int main()
+{
+    FILE *fp1, *fp2;
+    char buf[256] = {0};
+    int read_status, write_status, close_status;
+
+    //1、打开源文件
+    fp1 = fopen("./origin.txt", "r");
+    if(fp1 == NULL)
+        printf("打开源文件失败\n");
+    else
+        printf("打开源文件成功\n");
+
+    //2、拷贝源文件数据
+    read_status = fread(buf, sizeof(char), sizeof(buf) - 1, fp1);
+    if(read_status > 0)
+        printf("已复制源文件内容为:%s", buf);
+    else
+        return -1;
+
+    //3、关闭源文件
+    close_status = fclose(fp1);
+    if(close_status == 0)
+        printf("关闭源文件成功\n\n");
+    else
+        printf("关闭源文件失败\n\n");
+
+    //4、打开目标文件
+    fp2 = fopen("./copy.txt", "w");
+    if(fp2 == NULL)
+        printf("打开目标文件失败\n");
+    else
+        printf("打开目标文件成功\n");
+
+    //5、写入数据到目标文件
+    write_status = fwrite(buf, sizeof(char), read_status, fp2);
+    if(write_status > 0)
+        printf("复制成功，有%d个字符\n", write_status);
+    else
+        return -1;
+
+    //6、关闭目标文件
+    close_status = fclose(fp2);
+    if(close_status == 0)
+        printf("关闭目标文件成功\n");
+    else
+        printf("关闭目标文件失败\n");
+
+
+    return 0;
+}
\ No newline at end of file
diff --git a/Code/jincheng.c b/Code/jincheng.c
new file mode 100644
index 0000000..114f924
--- /dev/null
+++ b/Code/jincheng.c
@@ -0,0 +1,39 @@
+/***************************************************
+子进程每隔1秒打印一次apple，父进程每隔2秒打印一次hello。
+****************************************************/
+#include<stdio.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+int main()
+{
+    // 创建子进程
+    pid_t pid = fork();
+
+    // 错误处理
+    if (pid < 0) 
+    {
+        printf("创建子进程失败\n");
+		return -1;
+    } 
+
+    // 子进程
+    else if (pid == 0) 
+    {
+        while (1) {
+            printf("apple\n");
+            sleep(1); // 每隔1秒打印一次apple
+        }
+    } 
+
+    // 父进程
+    else 
+    {
+        while (1) {
+            printf("hello\n");
+            sleep(2); // 每隔2秒打印一次hello
+        }
+    }
+
+    return 0; // 程序结束
+}
\ No newline at end of file
diff --git a/Code/jincheng2.c b/Code/jincheng2.c
new file mode 100644
index 0000000..d863791
--- /dev/null
+++ b/Code/jincheng2.c
@@ -0,0 +1,52 @@
+/**********************************************
+创建一个子进程，打印hello后父进程打印world，之后父进程再创建两条进程，一个进程打印end，另一个进程打印...
+ **********************************************/
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <sys/wait.h>
+
+int main() 
+{
+    // 创建子进程
+    pid_t pid = fork();
+
+    // 错误处理
+    if (pid < 0) 
+    {
+        printf("创建子进程失败\n");
+        return -1;
+    } 
+
+    // 子进程
+    else if (pid == 0) 
+    {
+        printf("hello\n");
+    } 
+
+    // 父进程
+    else 
+    {
+        wait(NULL); // 等待子进程结束
+        
+        printf("world\n");
+
+        // 创建两个新的子进程
+        pid_t pid1 = fork();
+        if (pid1 == 0) 
+        {
+            printf("end\n");
+        }
+        else 
+        {
+            pid_t pid2 = fork();
+            if (pid2 == 0) 
+            {
+                printf("...\n");
+            }
+        }
+    }
+
+    return 0; // 程序结束
+}
\ No newline at end of file
diff --git a/Code/origin.txt b/Code/origin.txt
new file mode 100644
index 0000000..90bfcb5
--- /dev/null
+++ b/Code/origin.txt
@@ -0,0 +1 @@
+this is a test
diff --git a/Code/output/io b/Code/output/io
new file mode 100644
index 0000000..4176a63
Binary files /dev/null and b/Code/output/io differ
diff --git a/Code/output/io2 b/Code/output/io2
new file mode 100644
index 0000000..74ec280
Binary files /dev/null and b/Code/output/io2 differ
diff --git a/Code/output/jincheng b/Code/output/jincheng
new file mode 100644
index 0000000..a8e51bd
Binary files /dev/null and b/Code/output/jincheng differ
diff --git a/Code/output/jincheng2 b/Code/output/jincheng2
new file mode 100644
index 0000000..b1a361a
Binary files /dev/null and b/Code/output/jincheng2 differ
diff --git a/Code/output/xiancheng b/Code/output/xiancheng
new file mode 100644
index 0000000..2111323
Binary files /dev/null and b/Code/output/xiancheng differ
diff --git a/Code/xiancheng.c b/Code/xiancheng.c
new file mode 100644
index 0000000..b6b74e6
--- /dev/null
+++ b/Code/xiancheng.c
@@ -0,0 +1,14 @@
+#include<stdio.h>
+#include<pthread.h>
+
+void* start_routine(void* arg) 
+{
+    printf("Thread is running...\n");
+}
+
+int main()
+{
+    
+    
+    return 0;
+}
\ No newline at end of file