package algs11;
import stdlib.*;
/* **********************************************************************
 *  Compilation:  javac Average.java
 *  Execution:    java Average < data.txt
 *  Dependencies: StdIn.java StdOut.java
 *
 *  Reads in a sequence of real numbers, and computes their average.
 *
 *  % java Average
 *  10.0 5.0 6.0
 *  3.0 7.0 32.0
 *  <Ctrl-d>
 *  Average is 10.5

 *  Note <Ctrl-d> signifies the end of file on Unix.
 *  On windows use <Ctrl-z>.
 *
 *************************************************************************/

public class Average {
	public static void main(String[] args) {
		//StdIn.fromString ("10.0 5.0 6.0 3.0 7.0 32.0");
		StdIn.fromFile ("data/1kints.txt");

		int count = 0;       // number input values
		double sum = 0.0;    // sum of input values

		// read data and compute statistics
		while (!StdIn.isEmpty()) {
			double value = StdIn.readDouble();
			sum += value;
			count++;
		}

		// compute the average
		double average = sum / count;

		// print results
		StdOut.println("Average is " + average);
	}
}