INPUT

• Source: https://www.freebasic.net/wiki/wikka.php?wakka=KeyPgInputPp
• Last revised: 2025-06-01

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Reads a list of values from a text file

Syntax

` Input # filenum, variable_list

`

Parameters

filenum

a file number of a file or device opened for Input

variable_list

a list of variables used to hold the values read

Description

Reads from a text file through a bound file number a delimiter-separated set of values and writes them in reading order into the variables in variable_list. If a variable is numeric the read value is converted from its string representation into the corresponding type.

Numeric values are converted in a similar way to the procedures Val and ValLng, using the most appropriate function for the number format.

Delimiters may be commas or line breaks. Whitespace is also treated as a separator after numbers. A string including a comma or a whitespace must be surrounded by double quotes.

To read an entire line into a string, use Line Input instead.

Write # can be used to create a file readable with Input #.

Note:

• Using Input # is naturally dedicated to Input Access file mode.

• It is also allowed in Binary/Random Access file mode, but this was never well tested and results may vary.

Examples

start GeSHi

Dim a As Integer
Dim b As String
Dim c As Single

Open "myfile.txt" For Output As #1
Write #1, 1, "Hello, World", 34.5
Close #1

Open "myfile.txt" For Input As #1
Input #1, a, b, c
Close #1
Print a, b, c

end GeSHi

Differences from QB

• QB has a bug in INPUT # that causes it to read past the end of the line if it does not find a matching end-quote when reading a string. If you are porting QB code that relies upon this bug, you may need to edit your data files to remove newlines from inside quoted strings, or to use a custom function to piece back together the multiline string.

See also

• Input
• Input()
• Line Input #
• Write #
• Open
• Input (file mode)

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