Default constructor in C

Question

Is there a way to have some kind of default constructor (like a C++ one) for C user types defined with a structure?

I already have a macro which works like a fast in

Answer 1

Here's a little macro magic around malloc(), memcpy() and C99 compound literals:

#include 
#include 
#include 

#define new(TYPE, ...) memdup(&(TYPE){ __VA_ARGS__ }, sizeof(TYPE))

void * memdup(const void * obj, size_t size)
{
    void * copy = malloc(size);
    return copy ? memcpy(copy, obj, size) : NULL;
}

struct point
{
    int x;
    int y;
};

int main()
{
    int * i = new(int, 1);
    struct point * p = new(struct point, 2, 3);

    printf("%i %i %i", *i, p->x, p->y);

    return 0;
}