uoffset (3) Linux Manual Page
uoffset – Finds the offset of a character in a string. Allegro game programming library.
Synopsis
#include <allegro.h>
int uoffset(const char *s, int index);Description
Finds out the offset (in bytes from the start of the string) of the character at the specified `index’ in the string `s’. A zero `index’ parameter will return the first character of the string. If `index’ is negative, it counts backward from the end of the string, so an `index’ of `-1′ will return an offset to the last character. Example:
int from_third_letter = uoffset(text_string, 2);Return Value
Returns the offset in bytes to the specified character.