
6.4 Looping Techniques 291
Figure 6.4
Output from Example 6.2,
Reading from a File
6.4 Looping Techniques
You will find that the while loop is an important tool for performing many
common programming operations on a set of input values. For example,
the while loop can be used to calculate the sum of values, count the number
of values, find the average value, find the minimum and maximum values,
animate an image, and other operations.
6.4.1 Accumulation
Let’s look at a common programming operation for which a while loop is
useful: calculating the sum of a set of values. To do this, we will build a sim-
ple calculator that performs one function: addition. ...