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发表于 2012-11-13 08:48:12
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1判断语句* G. R l' M) I$ [% ?+ O9 y9 Y# D
if <condition> then
K% w3 K/ P6 R5 t <statement sequence1>;8 G Q: I6 {5 [7 c
elseif <condition> then
' S9 M+ F/ D" [7 s& ]2 p* ]( V <statement sequence2>;% `2 Q+ ?& j; @& s: m9 i, l x- R
else 2 i2 \+ J' x) g4 d7 b
<statement sequence3>;
T" E; h+ r7 }/ ^% |' } end;) i- H' x! l0 ~2 M9 f' i
如果分支比较多,用:4 M5 F! Y% ^; G& o
inspect <expression>
' D p% P0 P# z( r) R when <constant_list> then
+ q) L O! `0 j1 _ <statement sequence1>;
' _. }+ l/ A4 q- M/ D" A8 f" r e when <constant_list> then* s4 ]2 U" H: i/ S# {
<statement sequence2>;
, Q, ~* T4 Z( d" X5 j ...
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<statement sequence3>;$ ~; w2 y( Z! R8 ^/ }4 I& m
end;
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2循环语句! u" \& U: z* T1 \" v9 |6 F
(1) from <statement sequence1>
3 R4 E/ a4 A* ~. \+ ~ until <condition> loop- z- b, Q' c9 x9 l/ X ?; z1 C
<statement sequence2>;+ V/ `1 Y3 J+ h) K7 e7 J0 o
end;
* {9 y; P4 }: E$ M8 f (2) while <condition> loop" r/ ~! O( M: j& a9 ~& l2 w$ u
<statement sequence1>;
8 @" D; C7 g! f# k7 K& s$ s4 K' P end;
) V2 _& ], I; W' h (3) repeat 8 C& n# P' ?" h1 i
<statement sequence1>;- ]7 ~8 P3 Q3 z# p; R5 O
until <condition>;
/ L7 I9 E( J) X* u/ w (4) for <condition> to <condition> loop: P0 V' u- N c7 z0 c+ A9 G
<statement sequence1>;
$ ?7 ?9 O0 | a) }: m+ w: s7 Z* } next;
; z& |( q1 f& ]; `3中断语句 j+ b0 d2 ~' g$ J, G) X/ \ D
waituntil <condition> prio <integer expression>;1 v) {: Y2 n8 F9 K% M Z- V- U
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以上为常用的函数!
+ Q9 e0 n: e: G e; _8 _% [, Y还有很多,如有需要我把资料发到你邮箱里 # ^0 b+ F* P& f
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