WAP of pointer with increament & decreament

#include<stdio.h>
#include<conio.h>

void main()

{
	int x=5,y=10,*a,*b,*c;
	clrscr();
	a = &y;   printf("y:%d",y);
	b = &x;   printf("x:%d",x);
	*a = ++y - x++; 

printf("\ny:%d",y);

printf("x:%d",x);

printf("a:%d",*a);

	*b = --y + x--; 

printf("\ny:%d",y);

printf("x:%d",x);

printf("b:%d",*b);

	x=(*a + *b)+(*a - *b);
	*c = *b;

	printf("\nx=%d and y=%d",x,y);
	getch();
}