#include <iostream>

struct B { int n; };
class X : virtual public B {};
class Y : virtual public B {};
struct AA : X, Y
{
    AA()
    {
        X::n = 1;
        Y::n = 2;
        std::cout << X::n << Y::n << '\n';
    }
};

int main()
{
    AA a;
    return 0;
}

#include <iostream>

class Base
{
public:
    Base() {}
    virtual ~Base(){}
    void print()
    {
        std::cout << "Base" << std::endl;
    }
};

class Derived : public Base
{
public:
    Derived() {}
    virtual ~Derived(){}
    void print()
    {
        std::cout << "Derived" << std::endl;
    }
};

int main()
{
  Base* b = new Derived;
  b->print();
  delete b;
  return 0;
}

#include <iostream>

struct MyStruct
{
    int var1{0};
    unsigned int var2{-1};
};

int main()
{
    MyStruct s;
    std::cout << "var1=" << s.var1 << "; "
              << "var2=" << s.var2 << std::endl;
    return 0;
}

void SetData( std::string value, bool isFilePath );

obj.SetData( value, true );

void SetDataString( std::string value );
void SetDataFile( std::string filePath );

obj.SetEnabled( true );