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Formatting and I/O Library Chapter 2
LabWindows/CVI Standard Libraries 2-4 © National Instruments Corporation
described in detail in the Using the Formatting and Scanning Functions section later in this
chapter.
You may find the formatting and scanning functions more difficult to learn than other
LabWindows/CVI functions. To help you in this learning process, read the discussions in the
Formatting and I/O Library Programming Examples section at the end of this chapter.
Formatting and I/O Library Function Reference
This section gives a brief description of each of the functions available in the LabWindows/CVI
Formatting and I/O Library. The LabWindows/CVI Formatting and I/O Library functions are
arranged alphabetically.
ArrayToFile
int
status
=
ArrayToFile
(char *
fileName
, void *
array
, int
dataType
,
int
numberOfElements
, int
numberOfGroups
,
int
arrayDataOrder
, int
fileLayout
, int
colSepStyle
,
int
fieldWidth
, int
fileType
, int
fileAction);
Purpose
Saves an array to a file using various formatting options. The function handles creating, opening,
writing, and closing the file. The file can later be read back into an array using the
FileToArray function.
Parameters
Input
fileName
string File pathname.
array
void * Numeric array.
dataType
integer Array element data type.
numberOfElements
integer Number of elements in array.
numberOfGroups
integer Number of groups in array.
arrayDataOrder
integer How groups are ordered in file.
fileLayout
integer Direction to write groups in file.
colSepStyle
integer How data on one line are separated.
fieldWidth
integer Constant width between columns.
fileType
integer ASCII/binary mode.
fileAction
integer File pointer reposition location.