C flat --

C flat --, or C♭--, is an esolang created by User:Coder07 that is entirely composed of functions and values (e.g. "Hello world", 12345). It has nothing to do with C Flat.

Syntax

Values are strings and numbers. There are also other value types that can be created through functions. Functions work how you'd expect, the function name followed by the arguments in parentheses, separated by commas. Parameters surrounded by parentheses are optional, and ones ending in an asterisk (*)

Function name	Parameters	Description
add, sub, mul, div	a, b	Adds/subtracts/multiplies/divides a and b
if	condition, function, (else)	Runs function if condition is 1, otherwise runs else
input	(prompt)	Prompts the user for text input
output	value	Adds value to the output
key	(character)	Returns if key character is held, or the list of all held keys (as strings)
list	items*	Creates a list with items
index	index, list	Gets item index of list
find	value, list	Finds the first occurrence of value in list
setindex	index, value, list	Returns list with item index replaced with value
setvar	var, value	Sets var to value (If the variable is set to a function, it can be called like you'd expect)
getvar	var	Returns the value stored in var
function	parameters, code	Creates an anonymous function (parameters should be a list and code should be a string)
less, equal, greater	a, b	Returns 1 if a is less than/equal to/greater than b, otherwise returns 0
and, or	a, b	Returns if a and/or b are equal to 1
number, string	value	Coverts value to a number/string
char	value	Converts a number to its Unicode character. If value is a list of numbers, it returns a string with every item in value converted to its Unicode character.
charnum	value	If value only has one character, then it returns the number of it in Unicode. If it has multiple characters, it returns a list of each character as a number.

Examples

Hello world

output("Hello world!")

Cat

output(input())

Truth-machine

setvar("iftrue",function(list(),"output(1)iftrue()"))
if(number(input()),getvar("iftrue"),function(list(),"output(0)"))

Interpreter

No interpreter is available yet, but I'm working on one.