integerArray is a pointer

// ArrayDemo - demonstrate the use of arrays
//             by reading a sequence of integers
//             and then displaying them and their sum
#include <cstdio>
#include <cstdlib>
#include <iostream>
using namespace std;

// prototype declarations
int readArray(int integerArray[], int maxNumElements);
int sumArray(int integerArray[], int numElements);
void displayArray(int integerArray[], int numElements);

int main(int nNumberofArgs, char* pszArgs[])
{
    // input the loop count
    cout << "This program sums values entered "
         << "by the user\n";
    cout << "Terminate the loop by entering "
         << "a negative number\n";
    cout << endl;

    // read numbers to be summed from the user into a
    // local array
    int inputValues[128];
    int numberOfValues = readArray(inputValues, 128);

    // now output the values and the sum of the values
    displayArray(inputValues, numberOfValues);
    cout << "The sum is "
         << sumArray(inputValues, numberOfValues)
         << endl;

    // wait until user is ready before terminating program
    // to allow the user to see the program results
    cout << "Press Enter to continue..." << endl;
    cin.ignore(10, '\n');
    cin.get();
    return 0;
}

// readArray - read integers from the operator into
//             'integerArray' until operator enters neg.
//             Return the number of elements stored.
int readArray(int integerArray[], int maxNumElements)
{
    int numberOfValues;
    for(numberOfValues = 0;
        numberOfValues < maxNumElements;
        numberOfValues++)
    {
        // fetch another number
        int integerValue;
        cout << "Enter next number: ";
        cin  >> integerValue;

        // if it's negative...
        if (integerValue < 0)
        {
            // ...then exit
            break;
        }

        // ... otherwise store the number
        // into the  storage array
        integerArray[numberOfValues] = integerValue;
    }

    // return the number of elements read
    return numberOfValues;
 }

// displayArray - display the members of an
//                array of length sizeOfloatArray
void displayArray(int integerArray[], int numElements)
{
    cout << "The value of the array is:" << endl;
    for (int i = 0; i < numElements; i++)
    {
        cout << i << ": " << integerArray[i] << endl;
    }
    cout << endl;
}

// sumArray - return the sum of the members of an
//            integer array
int sumArray(int integerArray[], int numElements)
{
    int accumulator = 0;
    for (int i = 0; i < numElements; i++)
    {
        accumulator += integerArray[i];
    }
    return accumulator;
}

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