/*
  Name: findLargestInArray
  Copyright:
  Author: Professor Langsa,
  Date: 2006-10-30-14.42
  Description: Finds the largest element in an array.
*/

#include <iostream>
#include <fstream>                    //include library for file processing

using namespace std;

// Function findlargest finds the largest element in an array.
int findLargest(int number[], int count) {
    int largest, i;

    largest = number[0];
    for (i = 1; i < count; i++)
        if (number[i] > largest)
            largest = number[i];
    return largest;
} // end findLargest



/************************************************************************/



// Exercises the findlargest function.
int main() {
    const int MAXNUMBER = 1000;

    int i, count, number[MAXNUMBER];
    int findLargest(int[], int);

    ifstream infile;                 //create the file infile for input
    infile.open("NumbersData.txt");  //Method: open the file
    //Note: may be combined into one statement -
    //      ifstream infile("MyData.txt");

    if ( !infile.is_open() ) {       //Method: checks to see if file was opened
        // The file could not be opened
        cout << endl << "ERROR: Unable to open file" << endl;
        system ("PAUSE");
        exit(1);
    }


    i = 0;
    while (infile >> number[i])
        ++i;
    count = i;
    cout << "\nThe array contains " << count << " elements." << endl;
    cout << "\nThe largest element is: " << findLargest(number, count)
         << endl;;

    infile.close();

    system("PAUSE");
    return 0;
}