Appendix 1 : Command Summary
{something} = optional
DIM var{[dimension]} {as type} | Dimension - number of objects
in array
type=char, int, long, double |
dimension a variable |
INPUT {"prompt",} var | Var - variable to receive input
Prompt - prompt string |
Receives input from the keyboard and puts it in a variable |
PRINT {obj, } | Obj - a variable or expression or quoted string | Puts text output on the screen. The screen is about 23 chars x7 lines |
var = exp | Var - a variable
Exp - some arithmetic expression |
Assignment |
'comment | Comment | Everything after the ' is ignored |
FOR var = from-exp TO to-exp {STEP exp} | Var - variable
From-exp - starting value To-exp - ending value Step-exp - increment |
Begin a loop with variable var changing value throughout |
NEXT | Increment the var by to-exp and continue execution at the FROM statement | |
IF exp1 cond exp2 THEN | Exp1,exp2 - expressions to be compared
Cond - conditional =,<,<=,>,>=, and, or but you cannot compare strings |
Conditinal command if true, executes all statements down to the next ELSEIF, ELSE, and END IF. |
ELSE | If the IF cond fails then each command until the ENDIF is executed | |
ELSEIF exp1 cond exp2 THEN | Exp1, exp2 - expressions
Cond - conditional =, <, <=, >, >=, and, or But you cannot compare strings |
If the IF cond fails and the ELSEIF cond is true then all commands until the END IF or ELSE are executed |
SUB routine-name {(parameter,
)}
Parameter={BYREF|BYVAL} var {AS type} |
Routine-name is the name of the subroutine
Parameter is a dim-like statement No arrays are allowed. BYREF indicates passing by reference BYVAL indicates pasing by value. Type is char, int,long, double |
Creates a subroutine which includes all commands up to the END SUB command |
EXIT SUB | Exit the subroutine before reaching the END SUB command | |
END SUB | End of the subroutine | |
FUNCTION routine-name
{(parameter,
)} as type
Parameter={BYREF|BYVAL} var {AS type} |
Routine-name is the name of the function which
returns a value
Parameter is a dim-like statement No arrays are allowed. BYREF indicates passing by reference BYVAL indicates pasing by value. Type is char, int,long, double |
Creates a function which includes all commands
up to the END SUB command.
Declare the value of the returned function by setting the name of the function to a value Routine-name = exp |
EXIT FUNCTION | Exit the function before reaching the END FUNCTION command | |
END FUNCTION | End of the FUNCTION | |
OPEN pathname {FOR mode} AS filnumber Mode = {READ|WRITE|APPEND} |
Pathname=string of a file name Filenumber= value from 0 to 65535 Mode=access mode |
Opens a file for access. Note that opening for read destroys old content. File writing is constrained to 23KB |
CLOSE {filenumber} |
Filenunber = value from 0 to 65535 |
Closes a file. Specifying no filennumber closes all files currently open |
PUT filenumber, {bytepos},{var} |
Bytepos - position in the file to write to Var - variable to write |
Writes a var to a file at bytepos. If bytepos is omitted the var is written to the current pos. if the var is ommitted the file is positioned at the pos and no var is written |
GET filenumber, {bytepos},{var} |
Bytepos - position in the file to read from Var - variale to read into |
Reads a var from a file at bytepos. If bytepos is omitted the vari is read from the current pos. if the var is omitted the file is positioned at the pos and no var is read. |
PRINT #filemumber, (obj ) |
Filenumber - the file to write to
Obj - a variable or expression or quoted string |
Puts text output to the file specified by filenumber |
CLS |
Clear the screen |
|
Paper n |
N - the color of the paper (backgrond) Can be one of four values; 0=white, 1=light gray, 2=dark gray, 3=black | Paint the screen the color 'n' |
Ink n |
N - the color of the paper (backgrond) Can be one of four values; 0=white, 1=light gray, 2=dark gray, 3=black | Set the color of text, lines, and points |
Point x,y |
X - the x coordinate (-43 to +43)
Y - the y coordinate (-80 to +80) |
Set a single pixe on the display In the current ink color |
Line x0,y0,x1,y1 |
X0- the left-most point
X1 - the right-most point Y0 - the left most point Y1 -the right most point |
Draw a line on the display in he current ink color |
Math Functions: Sin, cos, tan, asin,ascos,atan, actan sinh,cosh,tanh, asinh,acosh,atanh,actanh sqrt, exp, log, log10,log2 pow,sqr_pow,rnd
|
Geometric mathemetaticl fucntion |
|
Beep n |
N = beep command
0-silence 1-bleep 2-oh no 3-laser 4-too bad 5-computing 6-carnival 7-completed task |
Makes noises on the cybiko |
WAIT n |
N - number of 10ths of seconds to wait |
Waits 10ths of seconds |
KEY |
|
Acts as a variable holding the most recently type keyboard variable. See the documenation for more info |
WHILE exp1 cond exp2 |
See IF command, above |
Initiates a while loop that exectes allcommands up to the WEND command. IF the conditional is still true, processing continues at the WHILE command |
WEND |
|
Terminates the while command |
TYPE {decl, } |
Decl is as in DIM |
Creates a structured datatype |
END TYPE |
|
Ends a type definition |
PRINTXY x, y {,vals} |
X,Y=the coordinate where the text will display Vals are values as in print to be displayed |
Positions the cursor on the screen and prints the values |
RIGHT dest, src, len |
Src = source string Dest = destination string Len = the number of bytes from the end of the src string to copy to the dest string |
Copies bytes from the right-hand side of the src string to the left hand side of the dest string |
MID dest, src, start{, len} |
Src = source string Dest= destination String Start = where in the src string to start copying Len = number of bytes to copy |
Copies from the middle of the soruce string to the destination string. If the length is left out it copied all bytes from the source string start point to the end |
file: /Techref/cybiko/b2c/cmds.htm, 29KB, , updated: 2008/6/13 17:33, local time: 2024/8/14 23:28,
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