Question

I want to initialize a struct within a default class initializer list. For example, if I have a class like like this:

class Foo
{
private:
    int x;
    int y;
    int z;
    somestruct p;
public:
    Foo(): x(1), y(2), z(3)
    {
        // other stuff
    }
};

So, I can clearly initialize primitive types this way – how do I initialize a struct, for example the somestruct p parameter? Are there any limitations on the design of p if initialized this way?

Answer 1

In the code below, m_strct is a member of MyClass, and is initialized by the default constructor.

struct MyStruct
{
    MyStruct(int i): // Constructor
        myData(i)
    { }

    int myData;
};

class MyClass
{
public:
    MyClass() :  // default constructor
        m_strct(0)
    { }

private:    
    MyStruct m_strct;
};