Update ch16.md

ZainChenDev · web-flow · commit 7126096bdc99 · 2023-03-20T17:47:14.000+08:00
for N in array[N], use unsigned instead of typename.
diff --git a/excersize/ch16.md b/excersize/ch16.md
@@ -88,7 +88,7 @@ T* end(const T (&arr)[N])
 解：
 
 ```cpp
-template<typename T, typename N> constexpr
+template<typename T, unsigned N> constexpr
 unsigned size(const T (&arr)[N])
 {
 	return N;

Original file line number	Diff line number	Diff line change
`@@ -88,7 +88,7 @@ T* end(const T (&arr)[N])`
`88`	`88`	`解：`
`89`	`89`
`90`	`90`	```cpp
`91`		`-template<typename T, typename N> constexpr`
	`91`	`+template<typename T, unsigned N> constexpr`
`92`	`92`	`unsigned size(const T (&arr)[N])`
`93`	`93`	`{`
`94`	`94`	`return N;`