// console1.cpp : Defines the entry point for the console application.
//

#include <stdio.h>

void pbv( int );    // Pass by Value
void pba( int * );  // Pass by Address
void rbr( int & );  // Receive by Reference
void pba1( int * ); // Pass by Address
void pap( int ** ); // Pass Address of Pointer 

int b = 0xB;

int main(int argc, char* argv[])
{
	printf("Demonstrating Pointers!\n\n");

	int a = 0xA;

	printf("Before, a = 0x%.8x\n", a );
	pbv( a );
	printf("After, a = 0x%.8x\n\n", a );

	printf("Before, a = 0x%.8x\n", a );
	pba( &a );
	printf("After, a = 0x%.8x\n\n", a );

	printf("Before, a = 0x%.8x\n", a );
	rbr( a );
	printf("After, a = 0x%.8x\n\n", a );

    int *pA = &a;
	printf("Before, a = 0x%.8x\n", *pA );
	pba1( pA );
	printf("After, a = 0x%.8x\n\n", *pA );

	printf("Before, a = 0x%.8x\n", *pA );
	pap( &pA );
	printf("After, a = 0x%.8x\n\n", *pA );

	return 0;
}

void pbv( int x )
{
    x = x * 2;
}
void pba( int *x )
{
    *x = *x * 2;
}
void rbr( int &x )
{
    x = x * 2;
}
void pba1( int *x )
{
	printf("\tBefore, a = 0x%.8x\n", *x );
	x = &b;
	printf("\tAfter, a = 0x%.8x\n", *x );   
}
void pap( int **x )
{
	printf("\tBefore, a = 0x%.8x\n", **x );
	*x = &b;
	printf("\tAfter, a = 0x%.8x\n", **x );   
}