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发表于 2012-11-13 08:48:12
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1判断语句% X" ~0 {9 W4 g6 a1 e
if <condition> then% e2 s" E$ a; f( \+ j- z- Z
<statement sequence1>;& t' v* b d) P6 ` V4 M6 j
elseif <condition> then
& `; I- ~4 M4 R: k# w <statement sequence2>;
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<statement sequence3>;3 G! B5 T+ y! R0 J$ \+ k1 o% B9 ]
end;
- A' ?& N* ~. |如果分支比较多，用：
' f, |) n) f& r7 W6 z) N inspect <expression>6 S+ h* x+ N% }, L) |& |' I7 B
when <constant_list> then
8 |$ m- \ i6 h) F+ d4 M <statement sequence1>;, m3 Q+ R, q0 x! d" k8 F" v+ [
when <constant_list> then2 k6 [+ X$ U7 j- L4 P
<statement sequence2>;! }3 o4 I o% P, O
...
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<statement sequence3>;9 ^; I( S4 K m2 I
end;# ?; j' u9 c) p! s( J! I3 u. d
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2循环语句
5 `! n$ h8 X" I4 q& c9 ` (1) from <statement sequence1>" p L" z' \) Q. Q, P. U
until <condition> loop0 m$ v6 z2 ?3 z5 U2 v9 V t
<statement sequence2>;
' c2 c _+ S/ A6 }/ n' c end;
4 q% e0 y: }6 G/ a$ E (2) while <condition> loop
5 l8 o( V% m* k) @) k- M! p <statement sequence1>;" V+ a% l# w3 G: ^$ N- S
end;
/ k, d/ m2 X, c# s (3) repeat 8 m% |9 V3 P/ g8 u
<statement sequence1>;- l! d" }5 I& `% z
until <condition>;
/ |. z9 K! r8 A. F* b (4) for <condition> to <condition> loop
/ s6 w: h" T! |2 [ <statement sequence1>;
2 B8 u9 p# [* T1 L @! B next;5 s; r) x3 Q- k0 G! u% q) C( K
3中断语句1 ]; k8 r5 g4 F- r/ Y I+ [, I& F
waituntil <condition> prio <integer expression>;0 z+ r8 D4 I4 e! v
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! B3 i' q o, j* j. @. i以上为常用的函数！
0 R' K1 ~1 J% @; r: ?& A7 m还有很多，如有需要我把资料发到你邮箱里 3 Y. ?( ~# Y o( H* Y$ T, C
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