C++ How do I read numbers from a file and assign it to a respective place in an array?

I need to create a program that will read numbers from a file and place them into an array. I have most of my program mapped out. I am confused on how to use a loop in my main function to place the values into an array after reading them from the input file. Should I create a boolean or make a pointer?

My input file: There are 6 cols and 4 rows.     

    89 93 23 89 78 99
    95 21 87 92 90 89
    94 88 65 44 89 91
    77 92 97 68 74 82 

Code    

#include "stdafx.h"
#include <iostream>
#include <fstream>
#include <string> 

using namespace std; 

//Function prototypes
void openInputFile(ifstream &, string str); 
void printArray();
int getTotal(int[], int, int); 
int getAverage(int); 
int getStandardDeviation(); 
int getRowTotal(int[], int); 
int getHighestInRow(int[], int); 
int getColumnTotal(int[], int); 
int getHighestInColumn(int[], int);

const int COLS = 6; 
const int ROWS = 4; 
int main()
{
    //Variables 
    int num; 
    int arr[ROWS][COLS] = {}; 

    ifstream inFile;

    string fileName = "C:\\Users\\Lisa\\Desktop\\a3_data.txt";

    openInputFile(inFile, fileName); //Call to open input file

    //For loop will read each value from file and place it in array
    while (inFile >> num)
    {
        cout << num << " "; 
    }

    //Close input file
    inFile.close(); 

    system("PAUSE");

    return 0;
}
//end of main function 

//To open input file
void openInputFile(ifstream &inFile, string fileName)
{
    //Open the file
    inFile.open(fileName);

    //Input validation
    if (!inFile)
    {
        cout << "Error to open file." << endl;
        cout << endl;
        return; 
    }
}
//end of OpenInputFile