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Ti-83 Basic

The Basics
     1.1: Getting Started
     1.2: The "Disp" Command
     1.3: The "Input" Command
     1.4: Strings
     1.5: If-Then Statements
     1.6: "For" Loops
     1.7: "While" Loops
     1.8: The "Getkey" Command
Creating Menus
     2.1: Lbl and Goto Commands
     2.2: The "Menu" Command
Graphics
     3.1: Setting up for Drawing
     3.2: Graphing
     3.3: Graph-Coordinates Drawing
     3.4: Screen-Coordinates Drawing
     3.5: Pictures
     3.6: "Input" Revisited
     3.6: Advanced Menus
     3.8: Dynamic Menus
     3.9: Dialog Boxes
Miscellaneous
     4.1: Memory Management
     4.2: Creating Lists and Saved Games
     4.3: Using with MirageOS
     4.4: Tips and Hints

"For" Loops

A "For" loop goes from a starting number to an ending number, hitting a specified interval of numbers in between. If I go between 1 and 50, then the code inside the For loop will be executed 50 times. Here's a sample:

ClrHome
For(A,1,10)
Disp A
End

This will count A from 1 to 10, displaying it on the screen each time. So the output would be:

So what can the For loop be used for, besides counting? Well, consider the following code to create a simple multiplication table:

ClrHome
For(I,0,3)
For(J,0,3)
Disp I*J
End
End

Note that I put one loop inside another, so the line "Disp I*J" is actually executed 16 times. For loops are also useful for reading elements from a list, though more on this later.

The text in this tutorial is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported License.