Designated initializers [Embedded]

Initialize a structure (Designated Initializers)

int aa[4] = { [2] = 3, [1] = 6 };

In a structure initializer, specify the name of a field to initialize with ‘.fieldname =’ before the element value. For example, given the following structure,

   struct point { int x, y; };

the following initialization

   struct point p = { .y = yvalue, .x = xvalue };

is equivalent to

   struct point p = { xvalue, yvalue };