numeric-variables.md

Documentation

• Bytecode
• Configuration
• Comments //
• Conditions if else end
• Constants true false HIGH LOW INPUT OUTPUT
• Cycles for while next break continue
• Functions function locals return done
• Macros macro
• Numeric variables @ @[]
• Operators + - * / % == != > >= < <= && || & | ^ >> << ++ -- ~ not
• Strings : :[]
• Unary operators ++ --
• System functions adc read args char cursor delay file close file open file read file write pipe close pipe open pipe read pipe write include index input io open io read io write mem millis number numeric print random restart serial open serial read serial write size stop string

Numeric variables

BIPLAN supports only one signed numeric variable type, that is by default long (if a different type is required see configuration). Numeric variables are identified by @. The name of variables must not start with a number, must be composed by lowercase and or uppercase letters, numbers and or the symbol _. Each variable is just an entry of a global array of variables. BIPLAN supports up to 87 variables.

See below how to define a variable:

@test = 10

Variables can be accessed by name:

print @test // Prints "10"

All Variables can be accessed by reference using @[]:

@test = 111
print @[0]  // Prints 111 or the value of the first variable defined
@[0] = 2
print @test // Prints 2

The reference of a variable can be obtained prepending its name with index:

@a_variable = 10 // index 0
@variable = 1    // index 1
@var = 22        // index 2

print index @var // Prints 2 or the index of $var

The bcc compiler starts from the longest variable name, for this reason @var is the last to be compiled and acquires the reference 2.