Adjust to the moving target called the C++ standard. Apparently nowadays it's not allowed to define an explicit copy constructor but not an assignment operator. Consequently, defining the explicit copy constructor in terms of the implicit/automatic assignment operator for general convenience no longer works. Add assignment operators. Caution: not tested with the IBM compiler, but there's no particular reason it shouldn't work.

SYNS=rcalc.syn
SRCS=./rcalc.c

PROG=rcalc
SYNOUTPUTEXT=.c
AGFILEDEST=here

THISEXAMPLE=rcalc
EXAMPLEFILES=*.syn

include $(TOP)/mk/prog.mk
include $(TOP)/mk/installexample.mk