/* concat3.c: concatenate three strings. Copyright 1992, 2008 Karl Berry. This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, see . */ #include string concat3 (const_string s1, const_string s2, const_string s3) { int s2l = s2 ? strlen (s2) : 0; int s3l = s3 ? strlen (s3) : 0; string answer = (string) xmalloc (strlen(s1) + s2l + s3l + 1); strcpy (answer, s1); if (s2) strcat (answer, s2); if (s3) strcat (answer, s3); return answer; }