Home > CBM > BASIC > Keywords > Left
180 Subpages: (divide), (equal), (less), (minus), (more), (multiply), (plus), (power), Abs, And, Append, Asc, Atn, Auto, Backup, Bank, Begin, Bend, Bload, Boot, Box, Bsave, Bump, Catalog, Char, Chr, Circle, Close, Clr, Cmd, Collect, Collision, Color, Concat, Cont, Copy, Cos, Data, Dclear, Dclose, Dec, Def, Delete, Dim, Directory, Dispose, Dload, Do, Dopen, Draw, Ds, Ds string, Dsave, Dverify, El, Else, End, Envelope, Er, Err, Exit, Exp, Fast, Fetch, Filter, Fn, For, Fre, Get, Get num, Getkey, Go, Gosub, Goto, Graphic, Gshape, Header, Help, Hex, If, Input, Input num, Instr, Int, Joy, Key, Len, Let, List, Load, Locate, Log, Loop, Mid, Monitor, Movspr, New, Next, Not, Off, On, Open, Or, Paint, Peek, Pen, Pi, Play, Pointer, Poke, Pos, Pot, Print, Print num, Pudef, Quit, Rclr, Rdot, Read, Record, Rem, Rename, Renumber, Restore, Resume, Return, Rgr, Right, Rlum, Rnd, Rreg, Rspcolor, Rsppos, Rsprite, Run, Rwindow, Save, Scale, Scnclr, Scratch, Sgn, Sin, Sleep, Slow, Sound, Spc, Sprcolor, Sprdef, Sprite, Sprsav, Sqr, Sshape, St, Stash, Step, Stop, Str, Swap, Sys, Tab, Tan, Tempo, Then, Ti, Ti string, To, Trap, Troff, Tron, Until, Using, Usr, Val, Verify, Vol, Wait, While, Width, Window, Xor |
| Keyword | Abbreviation | Token (hex) | Version(s) | Classification | | LEFT$ | LE{Shift+F} | C8 | 1.0 | Function |
The keyword includes the '$' character
LEFT$ ( source , length ) | Parameters | Type | Legal Value(s) | Default Value | Note(s) | | source | String | any (0 to 255 chars) | | | | length | Unsigned Byte | 0 to 255 | | |
| Returns | Type | Value(s) | Note(s) | | subString | String | 0 to length characters | |
Return the the left-most character(s) from a source string.
LEFT$ is one of the three string-splicing functions provided by BASIC (these complement string concatenation with the + operator). LEFT$ returns a subString with (upto) length characters from the begining (left side) of the source string. If length specifies more characters than exist in source, the entire source is returned and there is no error. If length is omitted or not a valid expression, SYNTAX ERROR occurs. If length is not numeric, TYPE MISMATCH ERROR occurs. If length is not a legal value (see above) an ILLEGAL QUANTITY ERROR happens. If source is omitted or not a valid expression, SYNTAX ERROR occurs. If source is not a string, TYPE MISMATCH ERROR occurs; the STR$ function can be used to convert a number into a string. Examples:
PRINT LEFT$(100.8, 2)
?TYPE MISMATCH ERROR
READY.
PRINT LEFT$("100.8", 2)
10
READY.
PRINT LEFT$("CBM", 16)
CBM
READY.
|
© H2Obsession, 2014 |