---
name: "al_ustr_find_replace"
section: "3"
platform: "linux"
package: "allegro"
version: "5.2.11.3-2"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/al_ustr_find_replace"
---

# al\_ustr\_find\_replace(3)

Allegro 5 API

## NAME

al\_ustr\_find\_replace - Allegro 5 API

## SYNOPSIS

-

  ```
  #include <allegro5/allegro.h>
  bool al_ustr_find_replace(ALLEGRO_USTR *us, int start_pos,
     const ALLEGRO_USTR *find, const ALLEGRO_USTR *replace)
  ```

## DESCRIPTION

Replace all occurrences of `find` in `us` with `replace`, beginning at byte offset `start_pos`. The `find` string must be non-empty. Returns true on success, false on error.

## SEE ALSO

[al\_ustr\_find\_replace\_cstr(3)](/al_ustr_find_replace_cstr/3.md)