Delete Array Item Function

//Please fill in the function at the bottom of the file.  (deleteItem)
//DO NOT CHANGE ANYTHING ELSE.
//main has all the code needed to test your function.  Once your function is written, please build and make sure it works fine

#include <iostream>
#include <fstream>
using namespace std;

//constants
const int CAP = 100;

//function prototypes
bool openFile(ifstream&);
void readData(ifstream&, int[], int&);
void printData(const int[], int);
void deleteItem(int[], int&, int);


int main()
{
    ifstream inFile;
    int list[CAP], size = 0;

    if (!openFile(inFile))
    {
        cout << "Program terminating!! File not found!" << endl;
        return -1;
    }
    //read the data from the file
    readData(inFile, list, size);
    inFile.close();
    cout << "Data in file:" << endl;
    printData(list, size);
    //delete a few items
    deleteItem(list, size, 20);
    deleteItem(list, size, 210);
    deleteItem(list, size, 110);
    deleteItem(list, size, 220);

    printData(list, size);
    //end program
    cin.ignore(100, '\n');
    cout << "Press any key to continue...";
    getchar();

    return 0;
}

//function to open file
bool openFile(ifstream& inFile)
{
    inFile.open("numbers.txt");
    if (!inFile)
    {
        return false;
    }
    return true;
}

//reads the data from the file
void readData(ifstream& inFile, int list[], int& size)
{
    while (!inFile.eof())
    {
        inFile >> list[size++];
    }
}

//print the contents of the array
void printData(const int list[], int size)
{
    for (int i = 0; i < size; i++)
    {
        cout << list[i] << endl;
    }
    cout << endl;
}


//delete an item (num) from the array
//if num is not found, display 'Item Not Found'
void deleteItem(int list[], int& size, int num)
{
    int numFound = 0;
    for (int i = 0; i < size; i++)
    {
        if (list[i] == num)
        {
            for (int j = i; j < (size - 1); j++)
            {
                list[j] = list[j + 1];

            }
            list[size - 1] = NULL;
            size--;
            numFound++;
            break;
        }

        // condition if flag isnt greater than 0
        if (numFound == 0) {
            cout << " Item Not Found! " << endl;
        }
    }
    return;
}