---
name: "al_ustr_vappendf"
section: "3alleg5"
platform: "linux"
package: "allegro5-doc"
version: "2:5.2.10.1+dfsg-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/al_ustr_vappendf/3alleg5"
---

# al\_ustr\_vappendf(3alleg5)

Allegro 5 API

## NAME

al\_ustr\_vappendf - Allegro 5 API

## SYNOPSIS

-

  ```
  #include <allegro5/allegro.h>
  bool al_ustr_vappendf(ALLEGRO_USTR *us, const char *fmt, va_list ap)
  ```

## DESCRIPTION

Like al\_ustr\_appendf(3alleg5) but you pass the variable argument list directly, instead of the arguments themselves. See al\_ustr\_newf(3alleg5) about the “%s” and “%c” specifiers.

Returns true on success, false on error.

## SEE ALSO

al\_ustr\_appendf(3alleg5), al\_ustr\_append(3alleg5)