将STL字符串和STL向量转换为void*？

#include<string>
#include <cstring>

std::string str = "Hello, world!";
void* ptr = static_cast<void*>(const_cast<char*>(str.c_str()));

#include<vector>

std::vector<int> vec = {1, 2, 3, 4, 5};
void* ptr = static_cast<void*>(vec.data());