Pointer to structure

orxshi (19)
Hi all,

There is a structure:

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struct struct_cent_3D
{	
        ...
	struct sGrad 
	{
		vectorize u;
		vectorize v;
		vectorize w;
		vectorize T;		
		vectorize *x;
	} grad;
        ...
} cent[size];


I want to make "*x" to point "u" for all "cent". That is, for all members of array,

cent[].grad.x = & cent[].grad.u

Can I just do this for only the first member,

cent[0].grad.x = & cent[0].grad.u

I don't want to make that for the whole array members one by one, that is for i=0,1,2,...,size

Regards.

Last edited on
Disch (13742)
I don't want to make that for the whole array members one by one, that is for i=0,1,2,...,size


That's what you have to do. Just put it in a loop:

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for(int i = 0; i < size; ++i)
  cent[i].grad.x = &cent[i].grad.u;



Only way around it would be to do this in a constructor:

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struct sGrad 
{
  sGrad()  // constructor -- called for each object when it is created
  {
    x = &u;  // set this pointer in the constructor
  }

  vectorize u;
  vectorize v;
  vectorize w;
  vectorize T;		
  vectorize *x;
} grad;
Last edited on
orxshi (19)
Disch, thank you for your help with instant messages.
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