TypeCasting

static_cast

#include <iostream>
#include <string>
using namespace std;

struct A{
    int first;
    int second;
    A(int first, int second):first(first), second(second){}
};

struct B{
    string third;
    string fourth;
};

int main() {
    A* a = new A(1,2);
    B* b = static_cast<B*>(a); //Compiler Error
    cout<<b->third; 
    return 0;
}