gpd-924-en/CPlusPlus/Pointers/functions.cpp

#include "functions.h"

void changeInteger(int n)
{
	n *= 2;
}

int changeIntegerPerReturn(int n)
{
	return  n * 2;
}

bool changeIntegerPerPointer(int* pN)
{
	if (pN == nullptr) return false;

	*pN *= 2;

	return true;
}

bool changeIntegerPerReference(int& n)
{
	n *= 2;
	return true;
}