"KILL=453.

不学无术

报错：
The current group of characters is interpreted as a name beginning with character other than a letter.  The first character of a name must be a letter."
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程序如下：
MODEL 1
CONST Tmax (VAL:500)
8 I0 ~$ D: g# l+ N& mIm (VAL:30.e3)  
) }0 K' w, U) U1 i* ST1 (VAL:2.e-6)  
! w* L3 z& Q- `7 JT2 (VAL:50.e-6)  
m (VAL:5)
1 {# i7 k0 Z( n& w$ ~, Cc (VAL:3.e8)  
v (VAL:1.1e8)
Io (VAL:1)   
z (VAL:6)  
INPUT UAP,UBP,UAN,UBN  
DATA Y,XA,XB  
OUTPUT UrAP,UrBP,UrAN,UrBN  
) M$ j3 m/ E0 p* e( J5 ]4 SVAR UindA[0..1000],UindB[0..1000],dI[0..1000],
1 K# J% D2 L( r2 e8 N# OTr,Ti,I,e,dt,UrAP,UrBP,UrAN,UrBN,
% o: ~- L/ A& |1 Nta,tb,b,n,L,x,Ko,Ui,Tj
FUNCTION SQR(x):=x*x
FUNCTION F(x,tr):=(x+b*b*(c*tr-x))/sqrt(sqr(v*tr)+(1-b*b)*(x*x+y*y))
FUNCTION U0(x,tr):=60*Io*z*b*(c*tr-x)/(y*y+sqr(b*(c*tr-x)))
/ C  h6 b, ^' a0 W" z4 gHISTORY
UrAP (dflt:0), UrBP (dflt:0)
& U& a4 F1 z2 T0 v+ C$ S) {( E) tUrAN (dflt:0), UrBN (dflt:0)
6 |- Y$ c8 a, i2 d$ Q$ U' x$ u6 S9 SUAP (dflt:0), UBP (dflt:0)
% ^. m4 h/ Z5 G2 [. QUAN (dflt:0), UBN (dflt:0)
) M0 a) f; Z/ ?* m& z- c' M0 Y. UINIT
dt:= timestep
b:=v/c
L:=XA-XB
FOR Tj:=1 TO 2 DO
' i+ u  Q! @7 k( {) D5 Gif Tj=1 then
x:=XA
5 V% H) m0 N) W0 F. T* yelse
* s9 H5 C, g9 m4 `( ~x:=-XB
end if
ta:=sqrt(x*x+y*y)/c
1 N3 w" H% F" o6 M# G1 K1 A5 ctb:=sqrt(sqr(x-L)+y*y)/c
FOR Ti:=0 TO Tmax DO
Tr:=Ti*dt
if Tr>ta
, \; I% a4 s) `) L# X7 t; Hthen
9 _* O3 Y7 I5 G% P4 Aif Tr>tb+L/c
3 s! ^; f1 E' n" f+ M4 o/ Ythen
* I8 L6 O& z# F; X. M3 r+ JUi:=U0(x,Tr)*(f(x,Tr)-f(x-L,Tr-L/c))
else
6 g- q4 C& i/ ^. [Ui:=U0(x,Tr)*(f(x,Tr)+1)
end if
0 H9 e7 J' \2 V$ Q5 qelse
3 b3 W# s( ^3 v5 _: D) s" FUi:=0
end if
0 y# a) d! B9 J  h+ B) ^3 `7 p) K# Fif Tj=1 then
UindA[Ti]:=Ui else
9 J, V* A2 {9 QUindB[Ti]:=Ui
" p6 G; P+ u3 e* k% P: o" p& jendif
END FOR
2 y7 j, V* z8 y* T0 VEND FOR
FOR Ti:=0 TO Tmax DO  
Tr:=Ti*dt
) U. b+ n! q4 `  X+ d. cIF (Ti=0) THEN dI[0]:=0
4 s* U# E9 M# s! A9 p8 F4 k& MELSE
6 x1 t) c% [/ X2 He:=exp(-(T1/T2)*exp(ln(m*T2/T1)/m))
I:=Im/e*exp(m*ln(Tr/T1))/(exp(m*ln(Tr/T1))+1)*exp(-Tr/T2)
& \& B( v1 m' G! VdI[Ti]:=I*((m/Tr)/(exp(m*ln(Tr/T1))+1)-1/T2)
. n7 j0 g3 J0 G& A5 D+ Q- TEND IF
END FOR
7 [4 Y) r. ?% W) C5 H& y4 iTi:=Tmax
4 {, ^0 t- R% H# s! J- i3 w+ ?WHILE Ti>1 DO
FOR Tr:=1 TO Ti-1 DO
$ V0 K' c$ a3 p8 [8 y7 iUindA[Ti]:=UindA[Ti]+UindA[Tr]*dI[Ti-Tr]*dt
UindB[Ti]:=UindB[Ti]+
UindB[Tr]*dI[Ti-Tr]*dt
ENDFOR
Ti:=Ti-1
3 Y7 x# I5 D) k8 h) I" zEND WHILE
3 y9 n8 c" _: y3 [+ l) l
! Z6 t3 U6 J" I* f& ?2 rTr:=L/c
END INIT
EXEC
; ?2 @8 u9 T! J" U/ tUrAP:=UindA[t/dt]+2*delay(UBP,Tr-dt,1)-delay(UrBP,Tr,1)
3 r* ?$ J: O6 o, ^4 h( sUrAN:=UindA[t/dt]+2*delay(UBN,Tr-dt,1)-delay(UrBN,Tr,1)
UrBP:=UindB[t/dt]+2*delay(UAP,Tr-dt,1)-delay(UrAP,Tr,1)
UrBN:=UindB[t/dt]+2*delay(UAN,Tr-dt,1)-delay(UrAN,Tr,1)
6 R0 |3 H2 ]: c! iEND EXEC
6 t0 r; p/ ?' w- S. m) hEND MODEL


7 J6 H" Q3 I  f( z+ `- n9 K

不学无术

找不出错了，有高手吗

点电灯

楼主，很抱歉，我是新手，看不出来问题，但是我又一个问题想请教一下楼主，楼主的MODEL编程是通过什么资料学习的？