Thread: How to call a function several times, but with a different structure as argument?

Hi

I have written a function where I can save a structure in a file. So the prototype looks like this:

Code:

void SaveStructure(FILE *f, STRUCTURE *structure);

The structure looks for example like this:

Code:

typedef struct
	{
		int dummy;
		char text[30];

	} STRUCTURE ;

Now I want to use the function SaveStructure(...) again, but with this structure for example:

Code:

typedef struct
	{
		int nr;
		char name[30];
		char street[30];

	} NEW_STRUCTURE ;

How can I make it possible that the function SaveStructure(...) doesn't care how the structure looks like?
Does the format of the pointer struct always looks the same? So could I make a dummy-structure:

Code:

typedef struct
	{
		int dummy

	} SAVESTRUCT;

and use the function:

Code:

void SaveStructure(FILE *f, SAVESTRUCT *structure);

this way?

Code:

void main (void)
{
	FILE *f1 = NULL;
        FILE *f2 = NULL;
	STRUCTURE structure;
	NEW_STRUCTURE new_structure;

	SaveStructure(f1, &structure);
	SaveStructure(f2, &new_structure);

	return;
}

thx for any help....