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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句$ R% c! h8 B- v% j* _3 u8 B6 M- q
if <condition> then$ C9 c5 U" T% u) B
<statement sequence1>;4 H: W+ h4 U, Y0 `5 B2 [/ ?
elseif <condition> then
+ F7 u+ f' P. D L( { <statement sequence2>;
2 s" ~1 x$ w9 |/ Y/ `! F; S else
) T) a9 j) Z, s* i# G/ r/ L" u! Q <statement sequence3>;
7 O5 `/ ]/ e0 F9 J6 Q% q5 x- P end;
. H- K" Z' t! {* ~0 E; V' R如果分支比较多,用:& e6 [* J$ ]3 m/ d: V% y& B& r
inspect <expression>
* r, f4 X# I0 q- g! v/ w$ n when <constant_list> then
& e. J0 v+ b! x, K <statement sequence1>;
& ?3 b r* S1 i% } g. b% U8 n when <constant_list> then& c! ^- Q& O% L+ ~3 p6 n
<statement sequence2>;
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else4 x1 ^9 x8 k5 k6 T3 l
<statement sequence3>;8 _* T& s$ G# T/ w Q; a
end;! x: {1 ]- z$ a- a
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2循环语句
4 B' }, f: H7 f( g# E (1) from <statement sequence1>
8 f5 [# G* r2 d3 I until <condition> loop
X6 K7 h- @% a" E <statement sequence2>;
$ t( N# V' f6 R1 x2 ? end;: P5 c. G2 q3 u/ S, X7 x; Q& K& ?
(2) while <condition> loop
& I7 n Y# z; M5 |: L) j' }9 s <statement sequence1>;& z9 Y1 p* O+ s! z) C4 \% p
end;/ B; R9 Q9 I# h5 _- @ B, f
(3) repeat 1 f3 U& R* j& ?
<statement sequence1>;
5 M1 j3 f6 f( q until <condition>;( f( d% y/ Y( X+ Y
(4) for <condition> to <condition> loop( B8 {9 B, C" n& c3 W& d* ]* O
<statement sequence1>;
@3 b) W$ e( Z9 _' a next;7 I3 `1 @' z8 G M- g8 y0 i
3中断语句
; n" s8 }* ]* D waituntil <condition> prio <integer expression>;
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以上为常用的函数!0 z3 o0 W2 J' Q8 c. S5 w
还有很多,如有需要我把资料发到你邮箱里 7 P. Z% d% q1 D2 F' w. p
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