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发表于 2012-11-13 08:48:12
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1判断语句
m- X$ d% T& B5 C; _ f if <condition> then0 x* I4 G7 Y4 V2 }/ V
<statement sequence1>;
. N5 ]7 {; N5 m4 \* d4 { elseif <condition> then5 m- v; M" J5 ~
<statement sequence2>;
1 r6 n% }3 q0 k# j# B else * y! p/ I$ e* i) t r8 i
<statement sequence3>;- b" z% k9 \1 L+ O: y8 W! J
end;
2 V p1 J% W; u7 A& G. ]如果分支比较多，用：
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4 L1 B( J& u5 k8 n4 k1 f when <constant_list> then/ |( T* e5 f! c" o2 y: h
<statement sequence1>;
' Z! o( `) ?# S6 o when <constant_list> then9 E3 \, @3 t g" i- S! ~
<statement sequence2>;
8 ^! r [! |2 K4 Q- i ...
& S$ ^9 B; s2 }# x else
; _5 ^2 h- J+ |. | <statement sequence3>;6 N* n( H+ h u' ?. D
end;
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2循环语句0 F1 y- B- e& n/ b
(1) from <statement sequence1>
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<statement sequence2>;
4 k: O2 U) B; a/ r; @0 d/ z end;
; r7 O) Z6 g4 T# v1 X6 N. [5 d (2) while <condition> loop
6 b6 U- R2 R' s. S3 M7 O; _ <statement sequence1>;
, S5 n; B$ u8 ~/ K end;
) H _' O8 b- }& x) i (3) repeat
H$ g1 P. F [5 P <statement sequence1>;
' O9 F# c9 a2 X until <condition>;
+ J' `: ?5 }: w8 P* j- A7 s j; F (4) for <condition> to <condition> loop
; ?" g+ l& D! F: @$ v <statement sequence1>;
' Y Z% S! u, a7 Z8 S% K next;' P0 V. X% A8 B! s5 ^) ~* k3 `
3中断语句
. \- n |0 S: N) V( b8 l$ b. f waituntil <condition> prio <integer expression>;$ y6 v8 ?7 A5 b* U4 s0 z7 z
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. K% [1 Q& q9 \8 i6 Y: ]% ~$ q6 |以上为常用的函数！
- k, ? H" K. g3 ?1 T0 H/ p还有很多，如有需要我把资料发到你邮箱里
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