What is a Loop?
Imagine you had to write 'I will not run in the hallway' 100 times. That would take forever! In programming, when we need to repeat an action multiple times, we use loops instead of writing the same blocks over and over.
A loop is a programming structure that repeats a set of instructions either a specific number of times or until a certain condition is met.
Why Do We Use Loops?
- To avoid writing the same code repeatedly.
- To perform a task a specific number of times.
- To keep a program running until something happens.
- To process each item in a list or sequence.
Types of Loops in PictoBlox
Types of Loops in PictoBlox
The Forever Loop
The Forever loop repeats its contents indefinitely until the program is stopped. It is commonly used for things that should always be running, like checking for key presses or keeping a sprite moving.
The Repeat (n) Loop
The Repeat (n) loop runs its contents a fixed number of times. When we drew shapes earlier, we used Repeat 4 to draw a square and Repeat 3 to draw a triangle.
Loops are one of the most fundamental and powerful concepts in programming. Almost every real program uses loops in some form!
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