#include   <stdio.h>





////////////////////////////////////////////////////
struct Cday
{

    int          nYear;

    const char *pszDay;

    int           nSec;


};


void foo(Cday d);


////////////////////////////////////////////////////
int main()                                        //
{

    Cday day1;

    day1.nYear =      2022;

    day1.pszDay = "Monday";

    day1.nSec = 1688169600;

    printf("size Cday = %d\n", sizeof(day1) );
    printf("address day1 = %d\n", &day1);
    foo(day1);

}



////////////////////////////////////////////////
void foo(Cday d)
{
     printf("address  d   = %d\n", &d);

     printf("d.nYear   = %d\n", d.nYear );
     printf("d.pszDay  = %s\n", d.pszDay);
     printf("d.nSec    = %d\n", d.nSec  );
     printf(" - - - - - - -\n"    );
     printf("d.nYear   = %d\n", d );
//   printf("d.pszDay  = %s\n", d  );
     printf("d.nSec    = %d\n", (int)(&d)+8  );

}






































///  Задачка получилась сложная.  Вот моё решение:
//   Если сможете упростить, будет отлично.



#include   <stdio.h>





////////////////////////////////////////////////////
struct Cday
{

    int                nYear;
    const char       *pszDay;
    int                 nSec;
};


void foo(Cday d);


////////////////////////////////////////////////////
int main()                                        //
{

    Cday day1;

    day1.nYear =      2022;

    day1.pszDay = "Monday";

    day1.nSec = 1688169600;

    printf("size Cday = %d\n", sizeof(day1) );
    printf("address day1 = %d\n", &day1);
    foo(day1);

}



////////////////////////////////////////////////
void foo(Cday d)
{
     printf("address  d   = %d\n", &d);

     printf("d.nYear   = %d\n", d.nYear );
     printf("d.pszDay  = %s\n", d.pszDay);
     printf("d.nSec    = %d\n", d.nSec  );
     printf(" - - - - - - -\n"    );
     printf("d.nYear   = %d\n", d );
//   printf("d.pszDay  = %s\n", d  );


char *p = (char*)&d;

      p = p + 4;



                            printf("d.pszDay address = %d\n",   p  );

      int *pn  = (int*)p;

      char *psz2 = (char*)*pn;
                            printf("d.pszDay         = %s\n",  psz2  );

      p = p + 4;

                            printf("d.nSec address   = %d\n",   p  );
      pn = (int*)p;         printf("d.nSec           = %d\n",  *pn );

}