Cookbook

Short, focused recipes for common tasks. Each recipe is a complete, runnable FlipJump program (paste it into the IDE or into a .fj file and run with fj).

• Hello, World!
• Echo a byte
• Print a number in decimal
• Conditional branches
• Loop N times
• Read, transform, print
• Swap two variables
• Add two numbers
• Call a function
• Define and print a string variable

How to use these

Every recipe follows the same shape:

1. Problem — what we’re trying to do.

2. Code — the whole program, ready to paste.

3. Walkthrough — line-by-line explanation calling out the STL macros used.

4. Variations — common tweaks (different word sizes, signed values, etc.).

If you’re new to FlipJump, start with Hello World and work down the list — they build on each other. If you have a specific task, jump straight to its recipe.

For the underlying mechanics see the Language Reference; for the macro details see the Standard Library.