JavaScript/JScript: Control Structures I - Pearson Learning Solutions

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Chapter 14 JavaScript/JScript: Control Structures I 411
Set total to zero
Set grade counter to one
While grade counter is less than or equal to ten
Input the next grade
Add the grade into the total
Add one to the grade counter
Set the class average to the total divided by ten
Print the class average
Fig. 14.6 Pseudocode algorithm that uses counter-controlled repetition to solve
the class-average problem.
Note the references in the algorithm to a total and a counter. A total is a variable used
to accumulate the sum of a series of values. A counter is a variable used to count—in this
case, to count the number of grades entered. Variables used to store totals should normally
be initialized to zero before being used in a program.
Good Programming Practice 14.5
Variables to be used in calculations should be initialized before their use. 14.5
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6 Class Average Program
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9 var total, // sum of grades
10 gradeCounter, // number of grades entered
11 gradeValue, // grade value
12 average, // average of all grades
13 grade; // grade typed by user
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15 // Initialization Phase
16 total = 0; // clear total
17 gradeCounter = 1; // prepare to loop
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19 // Processing Phase
20 while ( gradeCounter