指標基礎

過了段時間都會忘記的玩意…冏…複習一下，不然每次還要翻…

a)一個整型數 (An integer)
b)一個指向整數的指標 (A pointer to an integer)
c)一個指向指標的指標，它指向的指標是指向一個整型數 (A pointer to a pointer to an integer)
d)一個有10個整數型的陣列 (An array of 10 integers)
e)一個有10個指標的陣列，該指標是指向一個整數型的 (An array of 10 pointers to integers)
f)一個指向有10個整數型陣列的指標 (A pointer to an array of 10 integers)
g)一個指向函數的指標，該函數有一個整數型參數並返回一個整數 (A pointer to a function that takes an integer as an argument and returns an integer)
h)一個有10個指標的陣列，該指標指向一個函數，該函數有一個整數型參數並返回一個整數 (An array of ten pointers to functions that take an integer argument and return an integer)

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a) int a; // An integer
b) int *a; // A pointer to an integer
c) int **a; // A pointer to a pointer to an integer
d) int a[10]; // An array of 10 integers
e) int *a[10]; // An array of 10 pointers to integers
f) int (*a)[10]; // A pointer to an array of 10 integers
g) int (*a)(int); // A pointer to a function a that takes an integer argument and returns an integer
h) int (*a[10])(int); // An array of 10 pointers to functions that take an integer argument and return an integer

ref: Here