ark

The esoteric programming language that is somewhat useful.

All details are also on the esolangs.org wiki page.

Usage

• : Terminates the program. | *Required
• @ Initializes the program. | Required
• ! Outputs the next Alphanumeric character in the code. | Output
• ^ Outputs the stack. | Output
• > Adds the next numeric character to the stack. | Stack Manipulation
• < Asks for Input and adds it to the stack. | Input/Stack Manipulation
• + Add the top two rows in the stack and add the result to the stack. | Math/Stack Manipulation
• - Subtract the second row by the top row in the stack and add the result to the stack. | Math/Stack Manipulation
• * Multiply the top two rows of the stack and add the result to the stack. | Math/Stack Manipulation
• ) Subtract the top row by the second row in the stack and add the result to the stack. | Math/Stack Manipulation
• / Divide the top row by the second row in the stack and add the result to the stack. | Math/Stack Manipulation
• ( Divide the second row by the top row in the stack and add the result to the stack. | Math/Stack Manipulation
• # Clear the stack. | Stack Manipulation
• $ Add a random number in between the top row and the second row in the stack. | Stack Manipulation
• % Add a random number in between the second row and the top row in the stack. | Stack Manipulation
• { Used to initialize a function. (like python's: "def") | Functions
• } Used to end the initialization of a function. | Functions
• [ Used to initialize a multiple-character addition. | Stack Manipulation
• ] Used to end the initialization of a multiple-character addition. | Stack Manipulation
• ~ Used to call a function. | Functions
• T Used to initialize a command. || Command-Line Interaction
• N Used to stop the initialization of a command, then reads the result to the stack. || Command-Line Interaction

note: when printing a string like this: !B !L !A !H, you must put a space in between each character.

Examples:

A Hello World program:

@!H !e !l !l !o ! !W !o !r !l !d:

Each character is individually read then printed

Prints Hello World

Mathematics:

@>1>1+^:

Adds 1 to the stack twice, then adds the sum of the top two digits in the stack to the top of the stack, resulting in 1, 1, 2.

Prints: 112

Infinite loop:

@{~}~:

Similar to python's s = "exec(s)"; exec(s) the function's code is to run itself, then the function is called, then the function is called, resulting in an infinite loop¹.

¹there may be a recursion limit depending on the IDE and/or compiler