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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/ C2 h! b1 l; b" v3 `0 f
if <condition> then
8 ?3 R8 R$ ?7 w" Q8 o3 J <statement sequence1>;( L5 x" S; ]) O3 R0 ?5 J4 B6 |: }
elseif <condition> then
% M, o& L; {; b <statement sequence2>;- m% U, l c0 a5 V! x
else ! k0 j7 n% S# o) q0 I
<statement sequence3>;" {/ E; }1 [. D" z2 C- J1 A% @
end;
- \; _) |, ?+ I1 ]' V6 p5 @% t如果分支比较多，用：
$ w* U. Y) d6 O5 b, d B inspect <expression>
% D' T; f4 n# E% L8 } J6 X when <constant_list> then
' a3 Z5 f% z1 G9 G ]$ c <statement sequence1>;! _1 J( f+ _9 z2 F. ` o$ ?
when <constant_list> then
( O+ _8 `2 \% G; [; H4 r4 i <statement sequence2>;, H1 h1 L8 J3 q2 G3 K- j
...9 m; V% m4 Y& v- }2 v
else
& T6 o* j* c, A" Z: r <statement sequence3>;
; x6 v, G+ A# h+ j2 d5 Y nend;, K4 Z! @+ q5 D/ m* t. O
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2循环语句
6 O; m5 A$ c5 g2 T9 S (1) from <statement sequence1>1 a$ \. L, I. H, s
until <condition> loop7 F4 h9 D4 U* s3 j# ^& S
<statement sequence2>;
$ W; z* y( i& u! B* c6 Q& U end;8 F- I1 M' J+ P+ l& H
(2) while <condition> loop2 r( ?2 S9 t: m# B* a
<statement sequence1>;1 @' j3 w, r9 ~& {
end;
$ z9 c6 V% E8 R9 { (3) repeat 6 N% N `" r U5 F A0 J: y3 k
<statement sequence1>;) ~- e% c- C* h- y) `/ P, y
until <condition>;
7 Q8 ^! \5 ?$ h; e7 a9 Q" L (4) for <condition> to <condition> loop
4 {& e( i5 v) R$ d. \ <statement sequence1>;9 ~/ p+ {# |& T) H$ u5 c9 C1 s
next; P! l/ {1 O1 T7 e: P
3中断语句
7 P3 k" h0 V$ z* K/ ]7 F, a' D! X4 z waituntil <condition> prio <integer expression>;
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以上为常用的函数！4 I- \( U& e& |) E. \
还有很多，如有需要我把资料发到你邮箱里 + |( P1 f9 \: Z( u' R; h
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