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## COMP20005 workshop 3

In this workshop, you will solve problems that require you to use loops. You can use the `for` loop or the `while` loop. There’s another type of loop called a `do` loop, but you could transform a `do` loop into a `while` loop. Whenever you have a `for` loop, think about how to transform it into a `while` loop; and vice versa.

The assigned exercises for this workshop are exercises 4.1, 4.2, 4.5, and 4.9. Be careful with exercises 4.1(f,g). These exercises illustrate two errors in loops: one is a loop with an empty body and the other is an infinite loop. Exercise 4.2 asks you to think about how to transform a `do` loop into a `for` loop. This should be easy if you know how to transform a `while` loop into a `for` loop. In exercise 4.5, you need to read in a sequence of positive integers and plot the integers as a histogram. Think about how you would handle the case of an integer with one digit and the case of an integer with multiple digits. Exercise 4.9 is a little bit challenging and requires you to know a little bit about prime numbers. The basic idea of the exercise is that your program should read in a positive integer and find the next prime number after the integer. All prime numbers greater than 2 are odd, so you can limit your search to only the odd integers.