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发表于 2012-11-13 08:48:12
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1判断语句
% R, i) c P* v% C9 a t if <condition> then
! ~6 S" I5 P0 ^4 y+ C7 p <statement sequence1>;
: g& l% {) S' E" T5 c0 b& v M7 g$ X elseif <condition> then
% p2 M/ i- C1 o/ ^ <statement sequence2>;1 q- n5 h# h; a9 `# K
else
9 C6 L6 ^0 q" d/ \7 j7 R <statement sequence3>;
& ]: \$ l0 H/ h8 G. m! l5 Q end;
( ~- ?% o/ d( Z; z. l3 j2 R如果分支比较多，用：
) W8 S: ~) B* C- O n! R inspect <expression>
8 u5 e- z# f9 e5 L when <constant_list> then& l; s1 a- I7 v- d4 `6 _
<statement sequence1>;- r8 ]3 S: v1 Z' `& b8 C
when <constant_list> then+ X* x# B+ |/ x* S* {$ Z
<statement sequence2>;4 p3 Y8 \: O9 L8 p8 H
...) W% [' w# R ^! a
else
: v/ S# g1 Q0 T1 O" c3 \$ k t) i <statement sequence3>;
8 Y- A3 V2 i# f9 c; ~end;5 I2 `5 t8 y' z) V
6 F& q Y7 h0 t s: E4 ~% H$ x2循环语句
) x3 J: Q3 S* k G (1) from <statement sequence1>7 C3 Y6 c7 g2 p2 @
until <condition> loop
8 J) j$ v9 b9 N" r9 d <statement sequence2>;$ g* Y- m) w3 p; Z2 j$ w0 D
end;
; m# K3 ]9 [, Z+ [* P, k (2) while <condition> loop
0 h: B$ z$ N$ y: X9 Y <statement sequence1>;
3 ~) i3 v6 g- Y) C end;
/ i) o* ]. w" w: t( Q# ] (3) repeat $ C7 r' y7 `9 F+ Y( P3 V" y5 M
<statement sequence1>;8 E2 T8 t2 z- ^( X! j
until <condition>;
2 @- a1 l3 n4 o& Z# |, a/ a (4) for <condition> to <condition> loop
8 f$ Z( b. n8 A# Y <statement sequence1>;
4 U* y, D5 q, G! P3 h" `# T9 a; Y next;
; Y2 T# v6 H3 f* b% h' L) I, S6 {3中断语句2 W9 C; e* v% t3 }+ L" J
waituntil <condition> prio <integer expression>;& A/ y9 b5 _9 _
* V% x! Q) Q/ s1 F& U6 {8 l! \0 M; z6 Q7 ?$ y0 n
以上为常用的函数！
# Z" _2 P0 i9 a- l还有很多，如有需要我把资料发到你邮箱里 4 i) B- K; W& B5 @) _9 C6 q6 J4 Q
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