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发表于 2012-11-13 08:48:12
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1判断语句
8 _1 s- t, s9 Z$ U4 k if <condition> then/ ^% |( t$ L) F# k+ v1 M+ A
<statement sequence1>;
& X; J; d! D' s elseif <condition> then' G. p: V% T0 H. @/ e
<statement sequence2>;
. ^; \+ X/ y1 o' f& @5 G" D9 W else
% |, O6 M( o9 _4 A7 n4 J) N5 t: E <statement sequence3>; i1 y: p' A5 S
end;, r, v4 [! `7 Q# n
如果分支比较多，用：- ?7 c$ Z8 c) |) m
inspect <expression>
# M' e3 m B: s when <constant_list> then
' y5 U! W' G, G5 O& b. B& G <statement sequence1>;
5 q9 G! k+ Z4 {1 M when <constant_list> then% g: A' ~0 W8 D1 ~9 @
<statement sequence2>;
9 ]! Z. D3 t% r9 K) k5 e& P0 E ...
2 s# u8 ]% r# P$ a' |% b else
2 A q& i7 ], H <statement sequence3>;6 I. {; a- P/ i/ V+ _ z# m$ _
end;8 m$ S6 s/ J% Y/ X& f, K
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2循环语句
2 s3 U y$ w& j: s1 [& p p7 D! Y (1) from <statement sequence1>1 n0 P. J. v) |( f" q% T& k
until <condition> loop! w3 F) k8 F" y, z' I
<statement sequence2>;6 ?3 x0 b& L: M# X [
end;
) y1 J$ Z; [4 P1 l6 Q7 N: H/ s0 t (2) while <condition> loop
5 N. C# M- U3 e( o3 ~! ? <statement sequence1>;9 b+ k$ n. j1 B& m5 J, E' k( x4 d
end;
. _. h* n- R" N- n. C; R2 `: @ (3) repeat
) ~8 b$ M( ] C9 T h/ M <statement sequence1>;% w8 q @' G0 q" Q
until <condition>;
# J, z, `2 k5 G: u (4) for <condition> to <condition> loop5 N. g; g9 y! a& j6 a
<statement sequence1>;
: F0 l+ o* K& p+ v1 t& J0 h* I next;
8 ?/ a3 r: @; F3中断语句
j: o" X% Q& B' r/ {" m waituntil <condition> prio <integer expression>;9 f2 ~3 i. y4 F' I; [! G
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+ Q4 _! `0 k' {. u( A" t7 c1 B
以上为常用的函数！
7 R! `: Z O( d# {" G& D! \还有很多，如有需要我把资料发到你邮箱里
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