Is there a way of applying a function to each member of a struct in c++?

Question

You have a simple struct, say:

typedef struct rect
{
    int x;
    int y;
    int width;
    int height;
}
rect;

And you want to multiply

Answer 1

Like everyone has said, you can't do it directly, but there's nothing stopping you from overloading the * operator:

struct rect 
{ 
   int x; 
   int y; 
   int width; 
   int height; 
}

rect operator*(const rect& r, int f)
{
  rect ret=r;
  ret.x*=f;
  ret.y*=f;
  ret.width*=f;
  ret.height*=f;
  return ret;
}

then you can do this

rect r;
//assign fields here
r=r*5;