WAP to Demonstration of call by value

/*WAP to Demonstration of call by value*/

#include<stdio.h>
#include<conio.h>
main( )
{
 int  i ;
 int  marks[ ] = { 55, 65, 75, 56, 78, 78, 90 } ;

 for ( i = 0 ; i <= 6 ; i++ )
  display ( marks[i] ) ;
} 

display ( int  m )
{
 printf ( "%d ", m ) ;
}