Call parent constructor and pass in parameter

  
#include <iostream>
using namespace std;
class base 
{
 protected:
   int i;
 public:
   base(int x) 
   {
     i=x;
     cout << "Constructing base.\n";
   }
   ~base(void) {cout << "Destructing base.\n";}
 };

class derived : public base 
{
   int j;
 public:
   derived(int x, int y): base(y){
     j=x; 
     cout << "Constructing derived.\n";
   }
   ~derived(void) {cout << "Destructing derived.\n";}
   void show(void) {cout << i << ", " << j << endl;}
 };

int main(void)
{
   derived object(3,4);

   object.show();
}

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Call parent constructor and pass in parameter : Inheritance « Class « C++

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