From d5185f9107c25c0aabc0532266aabc397e12cf69 Mon Sep 17 00:00:00 2001
From: yujia jin <3225852021@qq.com>
Date: Sun, 21 May 2023 10:35:47 +0800
Subject: [PATCH] 1

---
 app.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/app.c b/app.c
index a408040..23630ca 100644
--- a/app.c
+++ b/app.c
@@ -130,4 +130,31 @@ void add_data()
     books = p;    // 新节点成为链表头
     
     printf("图书信息添加成功!\n"); 
+}
+// 更新图书信息
+void update_data()
+{
+    int id;
+    struct book *p;
+    
+    printf("请输入要修改的图书编号:");
+    scanf("%d", &id);
+    
+    p = find(id);     // 查找编号为id的图书
+    if(p != NULL)
+    {
+        printf("请依次输入修改后的图书信息:\n");
+        printf("图书名称:");
+        scanf("%s", p->name);
+        printf("图书作者:");
+        scanf("%s", p->author); 
+        printf("图书价格:");
+        scanf("%f", &p->price);
+        
+        printf("图书信息修改成功!\n");
+    }
+    else
+    {
+        printf("没有找到编号为%d的图书!\n", id);
+    }
 }
\ No newline at end of file