superclass-constructor.cpp

#include <cstdio>  // printf function

class SuperClass
{
public:
    SuperClass(int foo)
    {
        printf("SuperClass constructor fired with value %d\n", foo);
    }
};

class SubClass : public SuperClass
{
public:
    // Call the superclass constructor in the subclass initialization list.
    SubClass(int foo, int bar) : SuperClass(foo) 
    {
        printf("SubClass constructor fired with values %d %d\n", foo, bar);
    }
};

int main (int argc, char * const argv[]) {
    SubClass *subClass = new SubClass(12, 24);

    // Print: SuperClass constructor fired with value 12!
    // Print: SubClass constructor fired with values 12 24!

    delete subClass;
    
    return 0;
}