INPUT()
Reads a number of characters from console or file
Syntax:
declare function Input ( n as integer ) as string
declare function Input ( n as integer, filenum as integer ) as string
declare function Input ( n as integer, filenum as integer ) as string
Usage:
result = Input[$]( n [, [#]filenum ] )
Parameters:
n
Number of bytes to read.
filenum
File number of a bound file or device.
Return Value:
Returns a String of the characters read.
Description:
Reads a number of characters from the console, or a bound file/device specified by filenum.
The first version waits for and reads n characters from the keyboard buffer. Extended keys are not read. The characters are not echoed to the screen.
The second version waits for and reads n characters from a file or device. The file position is updated.
The first version waits for and reads n characters from the keyboard buffer. Extended keys are not read. The characters are not echoed to the screen.
The second version waits for and reads n characters from a file or device. The file position is updated.
Examples:
Print "Select a color by number"
Print "1. blue"
Print "2. red"
Print "3. green"
Dim choice As String
Do
choice = Input(1)
Loop Until choice >= "1" And choice <= "3"
Print "1. blue"
Print "2. red"
Print "3. green"
Dim choice As String
Do
choice = Input(1)
Loop Until choice >= "1" And choice <= "3"
Dialect Differences:
- The string type suffix "$" is required in the -lang qb dialect.
- The string type suffix "$" is optional in the -lang fblite dialect.
- The string type suffix "$" is ignored in the -lang fb dialect, warn only with the -w suffix compile option (or -w pedantic compile option).
Differences from QB:
- None in the -lang qb dialect.
See also:
Back to File I/O Functions
Back to User Input
