#include <iostream>
 
class Test{
private:
    int a;
public:
    Test(int i, double j) : a{i}, b{j} {}
    void show();
    double b;
};
 
void Test::show(){
    std::cout << a << " " << b << std::endl;
}
 
void doMagic(Test& x){
    Test* objPtr = &x;
    int* val1Ptr = reinterpret_cast<int*>(objPtr);
    *val1Ptr = 41;
    double* val2Ptr = reinterpret_cast<double*>(val1Ptr+1);
    *val2Ptr = 2.71;
}
 
int main(){
    Test x(1, 3.14);
    std::cout << "Przed modyfikacja: ";
    x.show();
    doMagic(x);
    std::cout << "Po modyfikacji: ";
    x.show();
    return 0;
}

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