diff --git a/stream_management.cpp b/stream_management.cpp
new file mode 100644
index 0000000..c7486ba
--- /dev/null
+++ b/stream_management.cpp
@@ -0,0 +1,40 @@
+#include <iostream>
+#include <string>
+using std::string, std::cout, std::cin;
+
+class Student
+{
+    int age{};
+    string info{};
+
+public:
+    friend std::istream &operator>>(std::istream &is, Student &s)
+    {
+        // 先输入年龄，再输入信息
+        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);
+            is.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
+        }
+        is.ignore(std::numeric_limits<std::streamsize>::max(), '\n'); // 清除之前遗漏的多余字符和回车
+        while (true)
+        {
+            cout << "请输入学生的信息(至少10字节)：";
+            getline(is, s.info);       // getline默认以回车为终止标记，且会提走并丢弃回车符
+            if (s.info.length() >= 10) // 这里的10涉及编码细节，不展开讨论
+                break;
+        }
+        return is;
+    }
+};
+
+int main()
+{
+    Student s{};
+    cin >> s;
+    return 0;
+}
\ No newline at end of file