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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
6 N$ K4 j) z% c# a. _2 l9 | if <condition> then
; F: {3 _0 r) J J) ^( ?3 _1 J1 c <statement sequence1>;
) b' d* q; T* s" N elseif <condition> then
5 F* T, f" }& M0 z <statement sequence2>;6 [+ ^9 d. v7 P) O4 @
else 3 }. f% N3 Q7 f' W! ^8 U, Z* I) Z
<statement sequence3>;
' `/ ~- S4 V/ P: G9 D6 V$ V end;
/ B+ i* M. U4 L1 g0 j; s$ }如果分支比较多，用：: z9 V# k# [, g% i8 }0 b/ ^! d
inspect <expression>
% g: m; ~" D9 i& Y when <constant_list> then" m3 @) J( d. j% t0 _7 c
<statement sequence1>;
! d ^+ s* D$ R6 [, a9 g3 h/ L when <constant_list> then- |8 D+ ?( f- c) @ O
<statement sequence2>;
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else! F0 j/ E' l( r/ {0 F8 N$ `
<statement sequence3>;" y9 d+ x3 J$ ?
end;
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# {; I6 Q. |3 j: z4 m0 h) C2循环语句7 l0 ?8 J+ h# ?" B- j% t7 _) k3 n
(1) from <statement sequence1>
' M. u/ j8 O" B5 L until <condition> loop+ M E3 z, a7 s) x" q; \
<statement sequence2>;
8 f9 `4 y; i$ S: U end;
7 m0 P4 p9 q7 R9 E$ G7 C (2) while <condition> loop# o- d& L" V# q9 _
<statement sequence1>;
% Q. M- f0 o% ` end;
; }* V7 a# U; y7 d (3) repeat
/ c" K8 Y) j+ ]4 K; H" Y <statement sequence1>;
* i8 n2 p- B, ?5 n until <condition>;; g% W4 X @7 n5 a
(4) for <condition> to <condition> loop, H! [ \! x/ K( D) S
<statement sequence1>;
2 X2 M6 H% J; b' c/ Y next;+ a! `8 w7 z4 [' d" s: o; f' L
3中断语句
, |4 r0 c8 r. C3 Z waituntil <condition> prio <integer expression>;
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. |3 [0 F6 ]5 e; G% v4 h以上为常用的函数！( J1 H. Y- {3 Y
还有很多，如有需要我把资料发到你邮箱里 9 g) I2 Z$ o& T1 I- T
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