ustrcmp - Compares two strings. Allegro game programming library.
#include <allegro.h>
int ustrcmp(const char *s1, const char *s2);
This function compares `s1' and `s2'.
Returns zero if the strings are equal, a positive number if `s1' comes
after `s2' in the ASCII collating sequence, else a negative number.
uconvert(3alleg), ustrsize(3alleg), ustrsizez(3alleg),
ustrncmp(3alleg), ustricmp(3alleg), ustrnicmp(3alleg)