from void * to in
时间: 2024-05-06 13:18:37 浏览: 69
insert into
`void*` is a pointer type in C and C++ that can hold any memory address. It is often used when writing functions or data structures that need to be generic and work with different types of data.
In order to convert a `void*` pointer to an `int` in C or C++, you should first cast the `void*` to a pointer of the appropriate type, and then dereference it to get the value. For example:
```
void* ptr = ...; // some void* pointer
int* int_ptr = (int*)ptr; // cast to int*
int value = *int_ptr; // dereference to get the int value
```
Note that this conversion is not always safe, since the size and representation of pointers and integers can vary depending on the platform and compiler. You should only perform this conversion if you are certain that the pointer actually points to an integer value.
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