Conditionals and Loops - Java Software Solutions: Foundations of Program Design - page 232

LISTING 5.7 continued

System.out.print ("Enter an integer (0 to quit): ");
value = scan.nextInt();

while (value != 0) // sentinel value of 0 to terminate loop
{
count++;

sum += value;
System.out.println ("The sum so far is " + sum);

System.out.print ("Enter an integer (0 to quit): ");
value = scan.nextInt();
}

System.out.println ();

if (count == 0)
System.out.println ("No values were entered.");
else
{
average = ( double )sum / count;

DecimalFormat fmt = new DecimalFormat ("0.###");
System.out.println ("The average is " + fmt.format(average));
}
}
}

OUTPUT

Enter an integer (0 to quit): 25
The sum so far is 25
Enter an integer (0 to quit): 164
The sum so far is 189
Enter an integer (0 to quit): -14
The sum so far is 175
Enter an integer (0 to quit): 84
The sum so far is 259
Enter an integer (0 to quit): 12
The sum so far is 271
Enter an integer (0 to quit): -35
The sum so far is 236
Enter an integer (0 to quit): 0

The average is 39.333