test
Merge branch 'master' of https://github.com/e4chang/homework9

Conflicts:
	Calc
	Calc.o
	Decin.o
	Driver
	Driver.datafile
	Driver.o
	Main.o
	Namein.o
Merge branch 'master' of https://github.com/e4chang/homework9

Conflicts:
	Calc
	Calc.o
	Decin.o
	Driver
	Driver.datafile
	Driver.o
	Main.o
	Namein.o
hw8 tree
TNode insert start
TNode insert update

debug_on
TNode insert update
Merge branch 'master' of https://github.com/e4chang/homework9

Conflicts:
	Calc
	Calc.o
	Driver
	Driver.datafile
	Driver.o
	Tree.c