How can I initialize an array of objects whose constructor require two or more arguments? [duplicate]

Answer 1

As long as the type has a copy constructior (whether synthesized or explicitly defined) the following works:

A array[] = { A(1, 3), A(3, 4), A(5, 6) };

This work both with C++2003 and C++ 2011. The solution posted by KerrekSB certainly does not work with C++ 2003 but may work withC++ 2011 (I'm not sure if it works there).

Answer 2

you can provide a default constructor and initialize your array as normal. After successful initialization, use a loop to reassign values to each member

Answer 3

Say:

const A a[3] = { {0,0}, {1,1}, {2,2} };

On older compilers, and assuming A has an accessible copy constructor, you have to say:

const A a[3] = { A(0,0), A(1,1), A(2,2) };

C++ used to be pretty deficient with respect to arrays (certain initializations just were not possible at all), and this got a little better in C++11.

Answer 4

i think it should be like this

const A a[3] = { A(1, 2), A(3, 4), A(5, 6) };