vfprintf

int vfprintf (FILE *stream, const char formatString[], va_list argumentList);

Purpose

Writes output to the specified stream according to format specifiers in formatString. This function is similar to fprintf except that vfprintf takes as a parameter an argument list initialized by the va_start macro.

Note  You cannot execute this function panel because of the nature of how variable argument lists are created.

Parameters

Input
Name	Type	Description
stream	FILE *	Contains a pointer to the stream to which the formatted output is written.
formatString	const char []	Contains the format string that specifies how subsequent arguments are converted for output. Use standard ANSI C format specifiers. If insufficient arguments exist for the format, the behavior is undefined. If the format is exhausted while arguments remain, the excess arguments are evaluated but are otherwise ignored. Note  For more information about the standard ANSI C format specifiers, refer to an external ANSI C reference.
argumentList	va_list	Contains a variable argument list initialized by the va_start macro and possibly subsequent va_arg calls.

Return Value

Additional Information

Library: ANSI C Library

Include file: ansi_c.h

LabWindows/CVI compatibility: LabWindows/CVI 3.0 and later