c++ - 我们可以有多少级别的指针？

Question

单个变量中允许有多少个指针(*)？

让我们考虑下面的例子。

int a = 10;
int *p = &a;

同样我们可以有

int **q = &p;
int ***r = &q;

等等。

例如，

int ****************zz;

Answer 1

C标准规定了下限:

5.2.4.1 Translation limits

276 The implementation shall be able to translate and execute at least one program that contains at least one instance of every one of the following limits: [...]

279 — 12 pointer, array, and function declarators (in any combinations) modifying an arithmetic, structure, union, or void type in a declaration

上限是特定于实现的。