Remote-processing CAMBASIC Manual do Utilizador descarregar pdf (Página 94)

Commands - 61

INPUT

Statement

SYNTAX: INPUT [#n,][;] var [,var] .....

INPUT [#n,][;] "prompt message"; var [,var] .....

INPUT [#n,][; ] "prompt message", var [,var ].. .. .

PURPOSE: The INPUT statement causes the program to pause and prompt an operator for input data.

REMARK S: The prompt message is a question mark in the first syntax. The other two syntaxes specify a

message string to be pr inted befor e the question m ark. No question mar k is printed if a comma is

used in place of a semicolon after the prompt message.

When the INPU T statement is followed immediately by a semicolon (the [;] option), the carriage

return is suppressed after the last variable.

The variables may be both numeric and string. The data you enter at the prompt m ust match the

variable type. Strings do not require the use of quotation marks. If a string is entered when a

numeric variable is required, a < Redo> error is given and all the variables must be reentered.

When multiple variables are used, separate the input data with commas. If fewer variables are

entered than specified with the INPUT statement, a '??' prompt will be given for the remainder.

The only editing you can do on an input line is the backspace. You can abort the INPUT statement

by executing < CTL-C> , which will also stop the program.

Even though the ser ial ports accept any char acter fr om 0 to 255, the INPUT statement filter s these to

the 32 to 127 ASCII set.

When the # is specified, n is the source number. For exam ple #2 is COM2. If the # is omitted, the

default is COM1.

Be careful when using this statement on boards with a watchdog timer. Unless the input is already

there (in the serial buffer) or the external device is quick, the watchdog is likely to reset. Also,

multi-tasking routines (such as ON TICK, ON INP) are not executed while INPUT is active.

RPC-2350 NOTE: The CAM BASIC statement BIT 128,4, 0 may need to be executed before you

will receive any characters. This command enables the CTS line to the sender.

RELATED: none

EXAMPLE: 10 INPUT "Input pH, volume";PH,VO

RUN

Input pH, volume? _

ERROR: none

1 2 ... 89 90 91 92 93 94 95 96 97 98 99 ... 207 208

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Remote-processing CAMBASIC Manual do Utilizador Página 94