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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& @/ V1 u3 }+ k' o1 ]- G
if <condition> then, X. @+ a; u; ^2 a7 [' a
<statement sequence1>;" v7 y F- p8 f$ d
elseif <condition> then
+ ]# c: F) W/ g' o <statement sequence2>;# s: o& K/ k4 ` Z" u, C
else 3 {* e K" P& _
<statement sequence3>;
! l5 f4 X# Y% O3 x/ X" K; r! z end;
& @9 [4 J* k' u+ K如果分支比较多,用:( O3 u4 N4 y# z+ Q
inspect <expression>2 J; _" j: @2 s4 }
when <constant_list> then
. X1 v' r/ k; \9 R9 ^ <statement sequence1>;
* p- y5 R/ ?: u( q when <constant_list> then
+ ^6 m; ]4 Q5 { <statement sequence2>;
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else/ X# U% L. R" U0 J' b
<statement sequence3>;
; a) ]) _+ |' _& Y. w+ `' V8 y. k* Eend;% R5 b& l H8 C- b, e! Z: \& O" l
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2循环语句
7 @: i* R J! f: Z (1) from <statement sequence1>
1 P0 m. g5 k' U R until <condition> loop
$ B$ b( ?: T* o" X: p @4 \% k: B& l <statement sequence2>;
- A8 p1 A6 s+ E f) S _8 o9 T end;
0 a K k$ [! N (2) while <condition> loop
7 T2 N, ~) z+ _; ~ <statement sequence1>;
- P. w) [! K+ V. ^, ?3 a' B$ L end;
3 ~+ v( i+ }% L/ {7 D4 e# _ (3) repeat
0 s4 P- e8 K- {! W' Y <statement sequence1>;6 t4 N" g& ~* z) Q4 p" @
until <condition>;
; o- V# G1 t! k8 i1 x) | (4) for <condition> to <condition> loop
/ v3 U" e* B3 b- b2 O" ^; s6 Q <statement sequence1>;, k+ x& Z) T- c- h7 T
next;
$ s1 `, J' K4 d3中断语句- O1 }6 F; d9 Y) o) Y6 X
waituntil <condition> prio <integer expression>;4 g8 M5 M' |; ]% }- p7 F1 o
7 R' _0 b, w- L3 q) x
6 W3 \- I$ k5 G* i) i, {以上为常用的函数!
1 J$ A D! M! M g& s( r还有很多,如有需要我把资料发到你邮箱里 1 ]8 f2 D. e7 m5 I7 H' Y
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