From 4f280e23d5beffcdcb664b91b260f0d10f49f0d7 Mon Sep 17 00:00:00 2001
From: p68710245 <xxj.rcls@seu.edu.cn>
Date: Sat, 27 Apr 2024 22:03:53 +0800
Subject: [PATCH] Add stream_management2.cpp

---
 stream_management2.cpp | 40 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 stream_management2.cpp

diff --git a/stream_management2.cpp b/stream_management2.cpp
new file mode 100644
index 0000000..5114d18
--- /dev/null
+++ b/stream_management2.cpp
@@ -0,0 +1,40 @@
+#include <iostream>
+#include <string>
+using std::string, std::cout, std::cin;
+
+class Student
+{
+    char info[11];
+    int age{};
+
+public:
+    friend std::istream &operator>>(std::istream &is, Student &s)
+    {
+        // 改为先输入信息，再输入年龄
+        cout << "请输入学生的信息(最多10字节)：";
+        is.getline(s.info, 10);
+        if (!is)
+        {
+            is.clear();
+            clearerr(stdin);
+            is.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
+        }
+        while (true)
+        {
+            cout << "请输入学生的年龄(20-60)：";
+            is >> s.age;
+            if (is && s.age >= 20 && s.age <= 60)
+                break;
+            is.clear(0);
+            clearerr(stdin); // 遇到ctrl+z或ctrl+d等情况下，clear并不能直接修复流，需要使用clearerr
+        }
+        return is;
+    }
+};
+
+int main()
+{
+    Student s{};
+    cin >> s;
+    return 0;
+}
\ No newline at end of file