assigning values to a dynamically allocated array of structures

[Bensky5012]

Hi,
I am trying to dynamically create an array of structures of type page. The page struct looks like this:

 typedef struct
{
   unsigned short int proc_no;
   unsigned short int page_no;
} page;

Then in a function called set_trace, I am using malloc to dynamically create the array. I believe thus far my code is correct, but the next thing I'm trying to do is enter values into this array of structs. This is what my set_trace function looks like.

 void set_trace( unsigned short int proc_no, unsigned short int trace[], page *pPter  )
{
   pPter = malloc( sizeof( page ) * trace_size );
   for( int n = 0; n <= trace_size; n++ )
   {
      pPter.process_number = proc_no;
      pPter.page_number = trace[n];
   }
}

For each iteration of the loop, I am trying to assign the proc_no and the value at trace[n] to the nth page in the array. Can someone show me how to do this?

[tabstop]

You need to pick a structure first out of your array to assign in to, and then assign it:

pPter[n].process_number = proc_no;
pPter[n].page_number = trace[n];

Note that you are trashing memory because your for-loop takes one too many steps.

[Bensky5012]

thanks!