#include <stdio.h>#include "dcaesar.h"extern unsigned char dcaesar_encrypt( unsigned char p,				      int k, 				      int base, 				      int start ){	return ((p+k)%base+start);};extern unsigned char dcaesar_decrypt( unsigned char c,				      int k, 				      int base, 				      int start ){	return ((c+base-k)%base+start);};