Input

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Input

Reads comma- or line-separated values from a text file into variables.

Syntax

Input # filenum, variable_list

Parameters

• filenum
• variable_list

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.

Remarks

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)

Examples

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

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Category: File I/O Functions
Kind: keyword

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Reproduced from the FreeBASIC Wiki Manual under the GNU Free Documentation License 1.3 — with no Invariant Sections, no Front-Cover Texts and no Back-Cover Texts. Copyright © the FreeBASIC project and wiki contributors. See License.