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                # Go 語言指針數組 在我們了解指針數組前,先看個實例,定義了長度為 3 的整型數組: ``` package main import "fmt" const MAX int = 3 func main() { a := []int{10,100,200} var i int for i = 0; i < MAX; i++ { fmt.Printf("a[%d] = %d\n", i, a[i] ) } } ``` 以上代碼執行輸出結果為: ``` a[0] = 10 a[1] = 100 a[2] = 200 ``` 有一種情況,我們可能需要保存數組,這樣我們就需要使用到指針。 以下聲明了整型指針數組: ``` var ptr [MAX]*int; ``` ptr 為整型指針數組。因此每個元素都指向了一個值。以下實例的三個整數將存儲在指針數組中: ``` package main import "fmt" const MAX int = 3 func main() { a := []int{10,100,200} var i int var ptr [MAX]*int; for i = 0; i < MAX; i++ { ptr[i] = &a[i] /* 整數地址賦值給指針數組 */ } for i = 0; i < MAX; i++ { fmt.Printf("a[%d] = %d\n", i,*ptr[i] ) } } ``` 以上代碼執行輸出結果為: ``` a[0] = 10 a[1] = 100 a[2] = 200 ```
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