How to Free Memory of A Structure with Pointers to another Structure

Question

I have two structures

struct SimpleXY
{
    double x;
    double y;

};

    struct SimpleXyLink
    {
            int num_xy;
            SimpleXY *simpleXyList         


        

Answer 1

If it is C++ (I'm confused here because you use free :-))

struct SimpleXY
{
    double x;
    double y;

};

struct SimpleXyLink
{   
    SimpleXyLink() : simpleXyList( new SimpleXY ) { }
    ~SimpleXyLink() { delete simpleXyList; }

    int num_xy;
    SimpleXY *simpleXyList;
};

int main() 
{
    SimpleXyLink* pXYLink = new SimpleXyLink();

    delete pXYLink;
}