Can structures be passed to the functions by value?

Can structures be passed to the functions by value?

Yes, we can do it.
consider the following code..

#include<stdio.h>
#include<conio.h>
struct emp
{
int no;
int empno;
};
typedef struct emp empdata;

main()
{

empdata edata;
void display( empdata );

clrscr();
edata.no = 1;
edata.empno = 2005;
display( edata );

return 0;
}

void display( empdata pst )
{
printf( "%d", pst.empno );
}