Trouble with pointers
 

Hi,

In this piece of code in my program I am receiving the following error request for member âyâ in something not a structure or union.

struct intpair {

                int x ;

                int y ;

        } ;

        

        struct intpair makeintpair(int x, int y) {

        struct intpair temp ;

        temp.x = x ;

        temp.y = y ;

        return temp ;

        }

        struct intpair shared_data = makeintpair(5, 0) ;

        shared_data.y=5;

                         /* Declare and define data to be be */

        

                         /* shared by code running on threads. */

        struct intpair *psd ;                                 /* Declare & define pointer to shared */

psd = &shared_data ;         /* data for threads (see below) to use to */

                                                        /* access shared data. */

        printf("%d",psd.y);

I can't seem use the data in psd. Can someone please help?

Thanks

Re: Trouble with pointers
 

In line:20 ie

printf("%d",psd.y);

psd is used to access y by dot(.) operator which is wrong because psd is a pointer and to access y you must use ->(arrow operator) ie

printf("%d",psd->y);