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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
/ _9 u- ~% V# f& {6 h$ V! G* v if <condition> then
: u+ o$ |8 W& m$ s* N7 e; L* k <statement sequence1>;* W6 [- x, H- y f S0 x: s; X
elseif <condition> then
$ S' T2 e+ I6 R( w, T7 h <statement sequence2>;
% X3 I0 W6 ?4 l5 o4 b else
) ~( b% o2 _/ i* M3 N7 ? <statement sequence3>;
8 h. {, `3 ^( o' ?& {) w end;! p/ c8 A4 i2 q) J
如果分支比较多，用：
; I; a( ?# b( Q: V. l* ~ inspect <expression>
& {% K3 I- x" P2 S* _, P when <constant_list> then) n; J4 b( A0 A: h2 {6 Q6 `2 J! v/ J
<statement sequence1>;9 a! ~6 ~% @( t+ a+ h. @! O
when <constant_list> then# c6 Y, c& g- ~" k- A) A0 e! A
<statement sequence2>;
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else0 g8 W, W. E) Z9 J, t* K, R5 G
<statement sequence3>;
% d4 w5 }- p. q' ~end;
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2循环语句
' P' T3 n! j6 V ]- L' d) D4 ^ (1) from <statement sequence1>
6 [; q! R, F7 N. O until <condition> loop' a/ g" M) a& m& q
<statement sequence2>; j9 x; Z' S# Z
end;0 V3 m5 O9 b8 U% Y% N
(2) while <condition> loop
1 Y8 M9 j4 R- N6 n- K5 B# d2 J7 f <statement sequence1>;
/ s- N! y! o: }% r) I end;8 \ _2 u3 z/ i) z
(3) repeat ( `$ w; k0 h2 n, J7 J- f5 S/ {
<statement sequence1>;
- ]1 m1 }2 e O% c6 ~- `3 o, _6 v until <condition>;; _. { t0 e5 k: ?, ?
(4) for <condition> to <condition> loop
- I( l. v( l7 _; X <statement sequence1>;
m" r6 t6 K; ^ next;
) J+ f7 X1 {3 u3中断语句
. S- D2 w' t5 G waituntil <condition> prio <integer expression>;
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7 F% S, H2 p- V以上为常用的函数！
6 n8 g% F, N$ }+ X2 X还有很多，如有需要我把资料发到你邮箱里 , k: c3 f: T3 w0 a% r. F) \& U' Q2 u5 {8 s
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