Can I call a constructor from another constructor (do constructor chaining) in C++?

Question

As a C# developer I\'m used to running through constructors:

class Test {
    public Test() {
        DoSomething();         


        

Answer 1

Would be more easy to test, than decide :) Try this:

#include 

class A {
public:
    A( int a) : m_a(a) {
        std::cout << "A::Ctor" << std::endl;    
    }
    ~A() {
        std::cout << "A::dtor" << std::endl;    
    }
public:
    int m_a;
};

class B : public A {
public:
    B( int a, int b) : m_b(b), A(a) {}
public:
    int m_b;
};

int main() {
    B b(9, 6);
    std::cout << "Test constructor delegation a = " << b.m_a << "; b = " << b.m_b << std::endl;    
    return 0;
}

and compile it with 98 std: g++ main.cpp -std=c++98 -o test_1

you will see:

A::Ctor
Test constructor delegation a = 9; b = 6
A::dtor

so :)