+errcode: ErrCode.c
+ $(CC) $(CFLAGJ) $^ -o $@
+
+echo: SimpleEchoTCPClient.c
+ $(CC) $(CFLAGJ) $^ -o $@
+
+echod: SimpleEchoTCPServer.c
+ $(CC) $(CFLAGJ) $^ -o $@
+
+daytimed: ElemDaytimeTCPCuncServ.c
+ $(CC) $(CFLAGJ) $^ -o $@
+
+iterdaytimed: ElemDaytimeTCPServer.c
+ $(CC) $(CFLAGJ) $^ -o $@