While loops and for loops: Correct Solution

Part 1

Translate the following natural language description of a loop into a for loop:

Declare a variable named ost of type int, initialized to 39. Then, until ost is greater than comee, subtract 2 from ost.

Solution

for (int ost = 39; ost >= comee; ost -= 2) {
    ...
}

Something to double-check in your solution:

• Note that the problem says “until,” not “while.” Did you use the correct operator in the loop’s end condition (ost >= comee)?

Part 2

Consider the following code:

A
while (B) {
    C
}
D

1. Assume the body of the loop executes 0 times. Write out the the order in which the statements will execute.

2. Assume the body of the loop executes 3 times. Write out the the order in which the statements will execute.

Solution

1. Order:

   A D

2. Order:

   A B C B C B C D

Related puzzles:

• While loops and for loops: Correct Solution (thfe-7cik-3qwp-fy)
• Class declarations and object modeling: Correct Solution (17va-gbr9-eoqa-dww5-L)