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发表于 2012-11-13 08:48:12
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1判断语句4 z7 N3 i# N5 {/ J
if <condition> then% c- S; {( J6 z
<statement sequence1>;' T0 P8 d- \9 d/ s; L; {
elseif <condition> then. a* e+ { C9 [$ x; m' V
<statement sequence2>;: J% \9 X2 l- n* a, Y2 i2 O
else 1 t2 w! u* g: E- w7 @
<statement sequence3>;9 W! F8 Q/ i* H7 ?; I* _) u- V
end;
' Y- ], ~" f; r3 }如果分支比较多，用：
4 @. ]' s) n) ]2 F4 f! S9 N! v inspect <expression>; y- Z# Q4 }" H% t3 \
when <constant_list> then. ~8 _% {7 S. x3 p; {& \
<statement sequence1>;! X5 K; [3 C1 O9 M1 Z
when <constant_list> then
$ ?; C& X2 k/ r, S# D+ j <statement sequence2>;
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else* `) K u; q# A7 Q) H
<statement sequence3>;& X* o7 F0 d8 a' s- V) h' y- F& l* w
end;: v# j2 f6 Q; e; b' Y- l! j
' x& V% p8 y- W8 Q7 D2循环语句
; W: d% I" i; e# g# e (1) from <statement sequence1>8 L0 e- l5 x3 V) X9 G
until <condition> loop
7 u4 A, Y5 D$ H <statement sequence2>;
( v6 w. a! O( X w1 W end;
: E) L$ p! ~) B& `8 d (2) while <condition> loop
9 w' b. o( W( P- b: C <statement sequence1>;
4 M# f6 W! R# e" e. g# z end;
6 R1 x9 a& o8 A: q. I1 l (3) repeat
# I/ ~4 y3 X' l. n' f <statement sequence1>;
" O, c9 g0 `5 }% `, v until <condition>;# U7 _! }* U! V, f( j! q
(4) for <condition> to <condition> loop6 {2 \8 H/ {+ g8 A) p. O3 l" K" `
<statement sequence1>;
6 v- ]3 N6 g! {% [9 Y next;
F4 ~2 M* V8 x* r0 X3中断语句3 i4 f( X1 S2 J' q
waituntil <condition> prio <integer expression>;+ c7 {7 ^7 K0 q8 W# P7 J- l0 [
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4 y8 h; i) l- H- D+ h以上为常用的函数！7 y3 B1 m. p+ G
还有很多，如有需要我把资料发到你邮箱里 8 s' f, ^' L* F( G7 A0 G3 T
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