From d4c8072f204ff1927d9e8dbf16ed70b0c59cb1fe Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=AD=99=E9=87=91=E6=B3=BD?= <26507089190@qq.com>
Date: Tue, 12 Sep 2023 20:54:18 +0800
Subject: [PATCH 1/2] =?UTF-8?q?=E7=AC=AC=E4=B8=80=E8=8A=82=E4=BD=9C?=
 =?UTF-8?q?=E4=B8=9A=EF=BC=88=E5=AD=99=E9=87=91=E6=B3=BD=EF=BC=89?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 level1/p01_running_letter/main.c | 37 ++++++++++++++++++++++++++++++--
 1 file changed, 35 insertions(+), 2 deletions(-)

diff --git a/level1/p01_running_letter/main.c b/level1/p01_running_letter/main.c
index f84d224..1be0349 100644
--- a/level1/p01_running_letter/main.c
+++ b/level1/p01_running_letter/main.c
@@ -1,6 +1,39 @@
-#include <printf.h>
+#include <stdio.h>
+#include <unistd.h>
 
+void move_letter(char letter, float speed) {
+    int position = 0;
+    int direction = 1;  // 1表示向右移动，-1表示向左移动
+
+    while (1) {
+        // 清空控制台输出
+        printf("\033c");
+
+        // 输出字母前的空格
+        for (int i = 0; i < position; ++i) {
+            printf(" ");
+        }
+
+        // 输出字母
+        printf("%c\n", letter);
+
+        // 停顿一段时间
+        usleep(speed * 1000000);
+
+        // 根据方向和位置更新下一个位置
+        position += direction;
+
+        // 检查是否到达边界，如果是则改变方向
+        if (position >= 79 - 1) {  // 79是典型控制台窗口宽度，减去1是为了避免边界溢出
+            direction = -1;
+        } else if (position <= 0) {
+            direction = 1;
+        }
+    }
+}
+
+// 调用函数进行测试，传入要移动的字母和速度（单位为秒）
 int main() {
-    printf("hello world!\n");
+    move_letter('A', 0.1);
     return 0;
 }
\ No newline at end of file

From a33c46a6b9524029245dc0f25e6a52bde39fcef6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=AD=99=E9=87=91=E6=B3=BD?= <26507089190@qq.com>
Date: Tue, 12 Sep 2023 22:04:24 +0800
Subject: [PATCH 2/2] =?UTF-8?q?=E7=AC=AC=E4=B8=80=E8=8A=82=E4=BD=9C?=
 =?UTF-8?q?=E4=B8=9A=EF=BC=88=E5=AD=99=E9=87=91=E6=B3=BD=EF=BC=89?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 level1/p01_running_letter/{main.c => 1-p01.c} | 0
 1 file changed, 0 insertions(+), 0 deletions(-)
 rename level1/p01_running_letter/{main.c => 1-p01.c} (100%)

diff --git a/level1/p01_running_letter/main.c b/level1/p01_running_letter/1-p01.c
similarity index 100%
rename from level1/p01_running_letter/main.c
rename to level1/p01_running_letter/1-p01.c