C ++指向const指针的const数组的指针

Question

I've created a const array of const pointers like so:

const char* const sessionList[] = {
    dataTable0,
    dataTable1,
    dataTable2,
    dataTable3
};

What is the correct syntax for a regular non-const pointer to this array? I thought it would be const char** , but the compiler thinks otherwise.

Answer 1

如果您确实需要一个指向数组的指针，正如标题所示，那么这就是语法：

const char* const (*ptr)[4] = &sessionList;

Answer 2

const char* const sessionList[] = { ... };

is better written as:

char const* const sessionList[] = { ... };

Type of sessionList[0] is char const* const .
Hence, type of &sessionList[0] is char const* const* .

You can use:

char const* const* ptr = &sessionList[0]; 

or

char const* const* ptr = sessionList; 

That declares a pointer to the elements of sessionList . If you want to declare a pointer to the entire array, it needs to be:

char const* const (*ptr)[4] = &sessionList; 

Answer 3

与为数组元素声明的类型相同，添加了额外的* ：

const char* const *