# Syntax For information about types, see [Types](./types.md). For information about literals, see [Literals](./literals.md). For information about assembly, see [Using assembly within Millfork programs](./assembly.md). ## Comments Comments start with `//` and last until the end of line. ## Declarations ### Variable declarations A variable declaration can happen at either top level of a file (*global* variables), or a top level of a function (*local* variables). Syntax: `[] [@

] [= ]` * `` can be only specified for local variables. It can be either `stack`, `static` or nothing. See [the description of variable storage](../abi/variable-storage.md). * `

` is a constant expression that defines where in the memory the variable will be located. If not specified, it will be located according to the usual allocation rules. `stack` variables cannot have a defined address. * `` is a constant expression that contains the initial value of the variable. Only global variables can be initialized that way. The behaviour is undefined when targeting a ROM-based platform. ### Constant declarations `const = ` TODO ### Array declarations An array is a continuous sequence of bytes in memory. Syntax: `array [[]] [@

] [= ]` TODO ### Function declarations A function can be declared at the top level. For more details, see [Functions](./functions.md) ## `import` statements TODO ## Statements ### Expression statement TODO ### `if` statement Syntax: ``` if { } ``` ``` if { } else { } ``` ### `while` and `do-while` statements Syntax: ``` while { } ``` ``` do { } while ``` ### `for` statements **Warning: `for` loops are a bit buggy.** Syntax: ``` for ,,, { } ``` * `` – an already defined numeric variable * `` – the range to traverse: * `to` – from `` inclusive to `` inclusive, in ascending order (e.g. `0,to,9` to traverse 0, 1,... 9) * `downto` – from `` inclusive to `` inclusive, in descending order (e.g. `9,downto,0` to traverse 9, 8,... 0) * `until` – from `` inclusive to `` exclusive, in ascending order (e.g. `0,until,10` to traverse 0, 1,... 9) * `parallelto` – the same as `to`, but the iterations may be executed in any order * `paralleluntil` – the same as `until`, but the iterations may be executed in any order There is no `paralleldownto`, because it would do the same as `parallelto`. ### `asm` statements See [Using assembly within Millfork programs](./assembly.md).