WAP to Subtraction of one pointer from another

/*WAP to Subtraction of one pointer from another*/

#include<stdio.h>
#include<conio.h>
main( )
{
 int  arr[ ] = { 10, 20, 30, 45, 67, 56, 74 } ;
 int  *i, *j ;

 i = &arr[1] ;
 j = &arr[5] ;
 printf ( "%d %d", j - i, *j - *i ) ;
}

WAP to Introducing pointers

/*WAP to Introducing pointers */

#include<stdio.h>
#include<conio.h>
main( )
{
 int  i = 3, *x ;
 float  j = 1.5, *y ;
 char  k = 'c', *z ;

 printf ( "\nValue of i = %d", i ) ;
 printf ( "\nValue of j = %f", j ) ;
 printf ( "\nValue of k = %c", k ) ;
 x = &i ;
 y = &j ;
 z = &k ;
 printf ( "\nOriginal address in x = %u", x ) ;
 printf ( "\nOriginal address in y = %u", y ) ;
 printf ( "\nOriginal address in z = %u", z ) ;
 x++ ;
 y++ ;
 z++ ;
 printf ( "\nNew address in x = %u", x ) ;
 printf ( "\nNew address in y = %u", y ) ;
 printf ( "\nNew address in z = %u", z ) ;
}

WAP to pass an array to a function by address

/*WAP to pass an array to a function by address*/

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

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

disp ( int  *n )
{
 show ( &n ) ;
}

show ( int  *m )
{
 printf("%d  ",*m)
}

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 ) ;
}