/* 9/25/2019
 * 
 * (2) introduce input files
 *     Must put the following 2 things:
 *     (a) import the java.io pkg
 *     (b) put "throws IOException"
 *     for input files, use 2 classes
 *     File and Scanner
 */
import java.util.Scanner;
import java.io.*;

public class ReadGrades {
  /** main reads in a number of grades from an input file
    */
  public static void main(String[] args) throws IOException { 
    // create a File object
    File infile = new File("testScores.txt");
    // create a Scanner object and connect it to the File object
    Scanner dataFile = new Scanner(infile);
    // now we can use all the methods of the Scanner class
    int grade;
    while (dataFile.hasNextInt()) {
        grade = dataFile.nextInt();
        System.out.println("grade read in: " + grade);
    }
  }
}

/** Lab 8
  * Write a loop to calculate a variable raised to the power of another variable.
  * We did 2^7 on the board and you will generalize to read in both 
  * the base and the exponent.
  * 
  * do it twice, using while and for
  */

/** time permitting: modify above program to count the 
  * number of grades read in from the file
  */