#####不可变常量#######################


EOF = 1000000
DIGIT = 1000001
POINT = 1000002
PLUS = 1000003
MINUS = 1000004
Letter = 1000005
Other = 1000006
ENTER =1000007
SPACE = 1000008
LEFTEQUAL = 1000009   #    代表<
RIGHTEQUAL = 1000010  #    代表>
EQUAL = 1000011       #    代表= 
EndState = -1
StartState = 0
######################################

STRING = ""
CurrentState = 0
Result = 0
CurrentNum = -1
DigitPoint = -1
DigitE = 0
Answer = -1
IndexSymbol = 0
Index = 0
#######################################