Passing Pointers to function example

Sat Feb 02, 2013 2:18 pm

Passing Pointers to function example :

Without Pointers :
cpp code

// This program is not intended to work correctly.  It is used
// demonstrate a common pitfall.  See article for more details.

#include <stdio.h>

void AddFive(int Number)
{
	Number = Number + 5;
}

void main()
{
	int nMyNumber = 18;
	
	printf("My original number is %d\n", nMyNumber);
	AddFive(nMyNumber);
	printf("My new number is %d\n", nMyNumber);
}

After adding pointers:
cpp code

#include <stdio.h>
void AddFive(int *Number)
{
	*Number = *Number + 5;
}

void main()
{
	int nMyNumber = 18;
	
	printf("My original number is %d\n", nMyNumber);
	AddFive(&nMyNumber);
	printf("My new number is %d\n", nMyNumber);
}

Passing Pointers to function example

Passing Pointers to function example

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