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/*

# Inheritance and constructors.

*/

#include "common.hpp"

int main() {

/*

If no base constructor is called on the initialization list,

the default constructor is called for the base, before the derived.

*/

{

class Base {

public:

Base() {

callStack.push_back("Base()");

}

};

class Derived : public Base {

public:

Derived() {

callStack.push_back("Derived()");

}

};

Derived d;

assert(callStack.back() == "Derived()");

callStack.pop_back();

assert(callStack.back() == "Base()");

callStack.pop_back();

}

/*

If the base does not have a default constructor,

you *must* use the initializer list, or it won't compile.

*/

{

class Base {

public:

int i;

Base(int i) : i(i) {}

};

class Derived : public Base {

public:

/* Base(1) is mandatory here! */

Derived() : Base(1) {}

};

Derived d;

assert(d.i == 1);

}

/* Can only call one constructor of each base class. */

{

class Base {

public:

Base() {}

Base(int i) {}

};

class Derived : public Base {

public:

Derived() : Base() /*, Base(1) */ {

callStack.push_back("Derived()");

}

};

}

}