How to convert a void pointer to array of classes
c++, callback, class, pointers
Solution
If you want to be able to recover the size, you need to use a container which keeps track of the size at runtime. I'd suggest using a std::vector instead of a raw array.
std::vector<person> p(10);
static_cast<std::vector<Person>*>(val);
Problem
I am trying to convert a void pointer to an array of classes in a callback function that only supports a void pointer as a means of passing paramaters to the callback. ``` class person { std::string name, age; }; void callback (void *val) { for (int i = 0; i < 9; i++) { std::cout << (person [])val[i].name; } } int main() { person p[10]; callback((void*)p); } ``` My goal is to be able to pass an array of the class `person` to the callback which then prints out the data such as their name and age. However, the compile does not like what I am doing and complains that `error: request for member 'name' in 'val', which is of non-class type 'void*'` How can I go about doing this?