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/* add.c - concatenate two strings in managed memory */ #include "../h/mh.h" #include char *add (this, that) register char *this, *that; { register char *cp; if (!this) this = ""; if (!that) that = ""; if ((cp = malloc ((unsigned) (strlen (this) + strlen (that) + 1))) == NULL) adios (NULLCP, "unable to allocate string storage"); (void) sprintf (cp, "%s%s", that, this); if (*that) free (that); return cp; }