printf
- Updated2023-02-21
- 1 minute(s) read
printf
int printf (const char formatString[], ...);
Purpose
Writes output to standard output according to format specifiers in formatString.
By default, the Windows console window moves to the foreground each time data is written to it. You can disable this behavior with the SetStdioWindowOptions function.
Parameters
| Input | ||||
| Name | Type | Description | ||
| 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.
|
||
| source_s | ... | Specifies one or more arguments that are to be converted and written to the standard output. If there are multiple arguments, they must be separated by commas. | ||
Return Value
| Name | Type | Description |
| CharactersWritten | int | Contains the number of characters transmitted or a negative value if an output error occurred. If an error occurs, printf sets errno to a nonzero value. |
Additional Information
Library: ANSI C Library
Include file: ansi_c.h
LabWindows/CVI compatibility: LabWindows/CVI 3.0 and later
Example
Refer to userint\standardio.cws for an example of using the printf function.