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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
+ _- P6 R9 O' A2 v% g& ^0 n% `" l if <condition> then4 L' B1 [6 O8 |0 q
<statement sequence1>;. i* h' [. [$ i8 w0 l& v
elseif <condition> then
1 w! b' ?# l7 O- p- A# W% F <statement sequence2>;# P" ]! @+ R, W+ j1 M
else
! W- h( j/ V/ C4 G <statement sequence3>;# Y! z+ H8 D8 Q+ U$ @. ^ ^/ p' `
end;# F8 ^( r' i; n5 T( A
如果分支比较多，用：8 M& z, O; G( ~9 x: }. w7 n! c
inspect <expression>
$ b z4 o& @9 p. t) d' y i when <constant_list> then
; ^5 y, L6 [8 Z% G& }7 { <statement sequence1>;
, o* w* B/ o0 X, X when <constant_list> then
& X. l& B7 `3 ~8 k9 m <statement sequence2>;
$ p# q x& A& ?) W$ L) A$ I1 b$ j ...
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<statement sequence3>;( x# p- t/ s" x: o( y
end;' o D" v" y2 ? }2 C( i$ ]& S
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2循环语句
9 R0 s' c3 [2 e' N4 @! e/ N (1) from <statement sequence1>& X- P" s" W. n
until <condition> loop
0 C3 C. D5 J3 z <statement sequence2>;
$ G0 J8 f% @/ ?& i7 V# q$ X end;
, R5 L, @7 m2 f) o (2) while <condition> loop8 y8 O6 V" d! s3 h i7 f# N7 R
<statement sequence1>;4 z5 Z2 B& K- }9 L$ X6 @$ a
end;
4 q# ~5 g, D% X$ i( q( t3 M (3) repeat
4 e& L. y% b! N4 |/ E. z! v <statement sequence1>;% e g/ j# p& a: i
until <condition>;
9 L" m/ R! t6 L% U+ }* T+ X (4) for <condition> to <condition> loop
/ h% [) A p* V& w% i$ J <statement sequence1>;6 o% o8 k/ `( t$ C- t/ j ]
next;% X4 [# U$ S% P `
3中断语句6 u0 a( t" U0 x3 K% T- E2 D
waituntil <condition> prio <integer expression>;" q8 B/ x/ M/ m3 g1 @! P; B7 f; |9 k
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以上为常用的函数！" X5 W& g# e& b5 ?6 l: z
还有很多，如有需要我把资料发到你邮箱里 ; S9 ?$ E4 j3 C6 q- R# ]% F: c
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