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发表于 2012-11-13 08:48:12
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1判断语句, z6 h, c: y) E% C3 v# @
if <condition> then
3 k$ ]. ]! V' \. u <statement sequence1>;0 P+ l6 i5 z% {5 f+ L d
elseif <condition> then3 Q7 g7 Q$ e2 i, L
<statement sequence2>;# M: N" z5 ?2 ^: ]# H
else & {( K/ J8 [' k3 z/ a; ?
<statement sequence3>;! P; g% b8 j5 x
end;
" |6 n9 ~9 v. {/ Z如果分支比较多，用：
4 z5 y' v5 Y) Q- g# f inspect <expression>: A6 [ E4 r# m9 F" P
when <constant_list> then" O' P( v' s( Q" a. I
<statement sequence1>;
2 K0 _0 }6 L* Q& y4 q) e& c when <constant_list> then
3 w# I" q4 A7 O0 H x! n <statement sequence2>;" Y, B: ~4 \" y# J& P* _
...; k# i$ f0 i3 M! X3 M4 }
else3 E9 T. {, ]. @
<statement sequence3>;
/ I4 w3 M; _7 a0 q, b* _# |9 w# {end;7 U& ]2 _! z9 x+ c0 t
. @ q* V9 A: v: c( c2循环语句( H. a% ~+ O2 Q5 M* ?# f! r
(1) from <statement sequence1>* g2 G) T4 I3 [. c
until <condition> loop* q! J2 z4 W* P
<statement sequence2>;
9 ^) i* d* Y7 ]" p/ c end;
4 ], i$ H* ?1 R- P) z: h. Y& p (2) while <condition> loop
3 _8 }5 ~# W8 n! d: ]7 y <statement sequence1>;: L# p+ Q. v8 K6 T
end;
?+ D% F$ ?$ X1 A1 a5 Z (3) repeat $ m7 I' [0 Z/ _' {! d5 k0 w
<statement sequence1>;
/ ^% v- E2 k, C# A until <condition>;! \4 S+ _/ A) @- e2 D
(4) for <condition> to <condition> loop1 O: t- c& h' b/ v- d7 x
<statement sequence1>;- ]9 ~$ a, T! A6 n
next;& u/ g4 K( K! `1 {1 _1 y
3中断语句
0 L+ E; R0 U, Y( x6 Y4 H0 l waituntil <condition> prio <integer expression>;0 m7 g, C! X" i# T. m9 L
+ U8 a- q" ~! U# }/ ^% B; Q: R) [- G4 f1 T& H: B% [ v
以上为常用的函数！
9 i+ M# M0 X) }) n8 ~: S% h& m还有很多，如有需要我把资料发到你邮箱里 5 i' k! [$ d" l( Q6 c
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