fori0li
ei0把表达式中的数字字符串转化成可计算的数字
i
tflag0i
tflag11标记是否是运算符号i
tflag21标记是否出现_doubleh0i
tge位数i
tbiao_dia
0是否是小数的类型
while1
flag11forj0j16j
ifli
eifuj
flag10break
414
fifli
ei_
breakifli
ei
ige0biao_dia
1ifli
eiPshuppiibreakifli
eiEshupeibreakifflag1hh10li
ei0flag1iifbiao_dia
geelse
breakifflag
ifbiao_dia
i
tr1fori
tk1kgek
r10hrshuph把转化而来的数字存于数组
514
fifli
eishup1
elseifli
eishup2
elseifli
eishup3
elseifli
eishup4
elseifli
eishup5
elseifli
eishup6
elseifli
eiQshup7
elseifli
eiLshup8
elseifli
eiCshup9
elseifli
eiSshup10
elseifli
eiTshup11
elseifli
eicshup12
elseifli
eisshup13
elseifli
eitshup14
elseifli
eishup15
elseifli
eishup16
elseifli
ei
shup17
ii1whileshui17get_top_char
doublemshui
ifm0
push_
umm
614
fielse
ifm1c
elseifm2c
elseifm3c
elseifm4c
elseifm5c
elseifm6c
elseifm7cQ
elseifm8cL
elseifm9cC
elseifm10cS
elseifm11cT
elseifm12cc
elseifm13cs
elseifm14ct
elseifm15c
elseifm16c
elseifm17c
charchget_top_char得到最顶端运算符号ifcomparechcomparec运算符号级别的比较
push_charci
714
felseifchc
pop_charielseifcomparechcomparecchch
ifchQchCchSchT
chcchscht
doubleo
epop_
umchardia
pop_charpush_
umoperate_o
eo
edia
elseifchLdoubleo
e_Lpop_
umdoubletwo_Lpop_
umchardia
pop_charpush_
umoperate_Ltwo_Lo
e_Ldia
elsedoublexpop_
umdoubleypop_
umchardia
pop_charifdia
x0判断是否除了