diff --git a/02. PARA/03. Resources（資源）/C++17/Structured binding declaration.md b/02. PARA/03. Resources（資源）/C++17/Structured binding declaration.md
index 2011c9d..02bdf41 100644
--- a/02. PARA/03. Resources（資源）/C++17/Structured binding declaration.md	
+++ b/02. PARA/03. Resources（資源）/C++17/Structured binding declaration.md	
@@ -3,5 +3,35 @@ Structured binding declaration 可以把對應的 tuple、pair、vector 展開
 ## 展開 tuple
 假設我們有一個 tuple：
 ```cpp
+std::tuple<std::string, uint32_t, uint32_t> person{ "John", 32, 170 };
 
+auto& [name, age, tall] = person;
+```
+
+name 會是 "John"
+age 是 32
+tall 是 170
+
+但比較好用的時候還是用來展開 function 的回傳值，假設我們有一個 function 會回傳 tuple：
+```cpp
+std::tuple<std::string, uint32_t, uint32_t> getPersonData(uint32_t id) {
+    return std::make_tuple("John", 32, 170);
+}
+
+auto [name, age, tall] = getPersonData(id);
+```
+
+## 展開 array
+`std::vector` 也是一樣的用法：
+```cpp
+#include <array>
+
+std::array<int, 3> my_vec = { 5, 7, 10 };
+auto& [num1, num2, num3] = my_vec;
+```
+
+或是：
+```cpp
+float rect[4]{ 5.0f, 6.0f, 120.0f, 200.0f };
+auto& [x, y, w, h] = rect;
 ```
\ No newline at end of file