C# Lesson 5 - Loops
One other thing computers are very good at is repeating instruction aka. Loops or Iteration.
There are 3 main kind of loops
- For Loops
- Do Loops
- While Loops
The following program repeats while ‘i’ is greater than zero
Note the use of i--, this takes one off whatever the value of ‘i’ is. It is a shorter version of writing i=i-1
While Loops are used in all the programs you currently have running!
Only when you exit the program does this loop end, use carefully!
Both the while and the do loop appear to do the exact same thing. The difference is a While loop may never run, where as a Do Loop will always run at least once.
Changing the i=10 line to i=0 in both loops and see the difference!
For Loops will be the loop you are likely to use the most.
Write a program that will;
Output the square of each number up to and including 20
Output the Square Root of the numbers between 2 and 25
Make you output for program 1 look like this