/* * ssequal.c -- check if a string is a substring of another * * $Id$ */ #include /* * Check if s1 is a substring of s2. * If yes, then return 1, else return 0. */ int ssequal (char *s1, char *s2) { if (!s1) s1 = ""; if (!s2) s2 = ""; while (*s1) if (*s1++ != *s2++) return 0; return 1; }