Multiple Base Classes in C++

Here is an example that uses multiple base classes:

#include <iostream>
using namespace std;
class base1 {
protected:
int i;

public:
base1(int x) { i=x; cout << "Constructing base1\n"; }
~base1() { cout << "Destructing base1\n"; }
};

class base2 {
protected:
int k;
public:
base2(int x) { k=x; cout << "Constructing base2\n"; }
~base2() { cout << "Destructing base1\n"; }
};

class derived: public base1, public base2 {
int j;
public:
derived(int x, int y, int z): base1(y), base2(z)
{ j=x; cout << "Constructing derived\n"; }
~derived() { cout << "Destructing derived\n"; }
void show() { cout << i << " " << j << " " << k << "\n"; }
};

int main()
{
derived ob(3, 4, 5);
ob.show();
return 0;
}