Generating Random Numbers in C++

generateRandomNumbers.cpp

#include <iostream>
#include <cstdlib> // For rand and srand
#include <ctime> // For the time function
using namespace std;

// Function prototype
int* getRandomNumbers(int);

int main()
{
	int* numbers = nullptr; // To point to the numbers

	// Get an array of five random numbers
	numbers = getRandomNumbers(5);

	//Display the numbers
	for (size_t i = 0; i < 5; i++)
	{
		cout << numbers[i] << endl;
	}

	// Free the memory
	delete[] numbers;
	numbers = nullptr;

	system("PAUSE");
	return 0;
}

/*********************************************************************
** Function Name: getRandomNumbers
** Description: The getRandomNumbers function returns a pointer	to an 
** array of random integers. The parameter indicates the number of 
** numbers requested.									   
*********************************************************************/

int* getRandomNumbers(int size)
{
	int* array = nullptr; // Array to hold the numbers

	// Return nullptr if size is 0 or negative
	if (size <= 0)
	{
		return nullptr;
	}

	// Dynamically allocate the array
	array = new int[size];

	// Seed the random number generator by passing the return value of time(0) to srand
	srand(time(0));

	// Populate the array with random numbers
	for (size_t i = 0; i < size; i++)
	{
		array[i] = rand();
	}

	// Return a pointer to that array
	return array;
}