Loops

Loops

> Tutorial

We are now going to look at another type of structure that is just as fundamental as conditions: loops!

A loop allows instructions to be repeated several times. There are several types that we will see in this part.

while loop

The while loop has a syntax similar to the if statement seen above. It allows an instruction block to be executed as long as a condition is met.

Here is an example:

This code will display in the logs when executed: > Counter is 1 Counter is 2 Counter is 3 Counter is 4 Counter is 5

do while loop

The do while loop is similar to the while loop, except that the condition occurs at the end, so the loop body is always executed at least once:

A possible display of the execution of the program: > x: 0.85712

for loop

Another slightly more complex type of loop exists, it looks like a while loop but more condensed. You will see in use that depending on the use case it is more practical to use a for or a while.

The for loop consists of three optional parts:

• Initialization: assigning a starting value to a counter variable;
• The condition: as long as it is valid, the loop continues to run;
• Incrementation: increase (or decrease as appropriate) the value of your counter variable.

Example of a for loop:

This code will show in the logs: > Counter i is 1 Counter i is 2 Counter i is 3 Counter i is 4 Counter i is 5

Attack multiple times in a row

Our leek has between 10 and 13 TP (thanks to Motivation) and the Pistol only costs 3 TP, so it can be used 4 times at most.

We use a for loop to execute the useWeapon function 4 times in a row:

Here our variable i will have the values 0, 1, 2 and 3 so the loop will do 4 iterations.

❓ Quiz

What is a loop for?

Executing statements multiple times Condense your code Speed up part of your code Execute instructions in parallel

Which code(s) are correct?

var x = 0 while (x var x = 0 for (var i = 0; i var x = 0 while { x += 2 } do (x var x = 0 for (; x

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