Allegro 5 api
#include <allegro5/allegro.h> bool al_ustr_assign_substr(ALLEGRO_USTR *us1, const ALLEGRO_USTR *us2, int start_pos, int end_pos)
Overwrite the string us1 with the contents of us2 in the byte interval [start_pos, end_pos). The end points will be clamed to the bounds of us2.
Usually you will first have to use al_ustr_offset(3alleg5) to find the byte offsets.
Returns true on success, false on error.
al_ustr_assign(3alleg5), al_ustr_assign_cstr(3alleg5)