---
name: "fmt_plusminus"
section: "3"
platform: "linux"
package: "libowfat-dev"
version: "0.32-5"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/fmt_plusminus"
---

# fmt\_plusminus(3)

write '+' or '-'

## NAME

fmt\_plusminus - write '+' or '-'

## SYNTAX

**#include \<libowfat/fmt.h\>**

size\_t **fmt\_plusminus**(char \**dest*,signed int *source*);

## DESCRIPTION

fmt\_plusminus writes '-' to *dest* if *source* is negative, '+' if *source* is positive, nothing otherwise.  It returns the number of bytes written.

fmt\_plusminus does not append \\0.

If *dest* equals FMT\_LEN (i.e. is zero), fmt\_plusminus returns the number of bytes it would have written.

## SEE ALSO

[fmt\_minus(3)](/fmt_minus/3.md), [scan\_plusminus(3)](/scan_plusminus/3.md)