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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
% |4 I/ a5 g' P& S0 J {. W if <condition> then6 }9 _; c2 I! F9 b+ R: M8 p
<statement sequence1>;- W9 O- |; {0 D# H" H' G* u) |( r
elseif <condition> then
6 k W/ C, Y4 f/ G* F6 q <statement sequence2>;7 \$ }. I0 h0 k+ h" I0 Z1 [6 D
else 2 B& i/ l; j& M9 p8 `* [1 V! m
<statement sequence3>;! w9 O$ K# ?- g& e) L+ D) q
end;' @; F% z% z3 T
如果分支比较多，用：- f2 E$ ]* V% q- t
inspect <expression>/ U' S# r2 q* u: k" }( g
when <constant_list> then h2 c8 q% N+ @- ?. _9 b6 v/ R
<statement sequence1>;
; T( Q: g/ p, }! S! t when <constant_list> then) t9 d8 [, a" s1 p. f
<statement sequence2>;
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else
3 V0 C s8 ^; Z# x* [- p D5 Y <statement sequence3>;! J( f! ]! Q- @. r; W# m$ V0 @
end;' e+ s! Q5 J) H- @
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2循环语句
. ^. `( ^% J& r- W0 M7 d2 w' t (1) from <statement sequence1>
; B% U" i$ @+ m6 T! t until <condition> loop
. l! A6 j8 C) l& x U' x <statement sequence2>;6 ?& [4 s* d' Z; G ~
end;
9 g/ I, E5 F" w (2) while <condition> loop) P: H2 {) Z9 i2 g% Z
<statement sequence1>;
; e' O5 O( W0 k$ ?9 W3 \ end;
/ A. x- K! b* z' m X2 S9 c+ } (3) repeat 0 v' a. e( o' X
<statement sequence1>;
- F' m& e: l& w4 i1 K until <condition>;
: b: Q& o. M+ R$ H# F0 u6 S1 b* M (4) for <condition> to <condition> loop, m4 [1 d$ `& K$ ?) r! l6 x
<statement sequence1>;
9 j& S( M) `8 M1 _6 T next;( h' ~0 L; Y+ a$ e$ t; }
3中断语句
: \! e/ {8 G* n7 C waituntil <condition> prio <integer expression>;
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以上为常用的函数！' Y8 h, O( W- Z& s4 p, O+ n& ~
还有很多，如有需要我把资料发到你邮箱里 & r+ _! S6 B! J: m+ r# [1 D2 |( z
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