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发表于 2012-11-13 08:48:12
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1判断语句
3 d8 e: j" D7 |1 Y4 D# f if <condition> then) S4 V. a; f1 M3 V" L+ m. I
<statement sequence1>;0 B( }& [; F5 O
elseif <condition> then
; X0 [5 H6 t5 m7 d- A6 M1 m <statement sequence2>;
0 }, M1 \* B, K' o" j' b$ J else 6 ]' T- H0 c1 N+ }$ z
<statement sequence3>;
- O% ]( |2 e1 h2 D+ @ end;
% P% o; m6 d$ O6 o* m( H# T. q如果分支比较多，用：
6 @8 B4 @, {, p" d* j9 N inspect <expression>
' C8 m0 \1 k& d! P$ e9 t when <constant_list> then# U& H# N* |. U5 d, K1 E8 R8 _: e' I, c
<statement sequence1>;
) H" X$ d1 U# j' Q! J$ i when <constant_list> then2 ^! \4 Z+ U7 R# P. x
<statement sequence2>;! ^' P$ o# E n. P* i9 S
.../ n( S1 a+ E9 `! ~4 j- ^1 M
else W# w7 ]7 r; w. k7 s7 ^8 h
<statement sequence3>;* k3 w# M' y+ F; E% Y& h0 _8 T
end;" O, ^8 y3 |$ `+ d4 V$ E
3 @ Y8 Q% O5 ?2 e2 n \: j2循环语句, F3 g$ x% ^9 } L6 ]' l8 ?; R4 {. U( r
(1) from <statement sequence1>! }. z1 O& S9 D, |! P
until <condition> loop
. ?, H- Q; q% C5 R4 i9 X1 e <statement sequence2>;- j+ n3 g' B! t, q4 \& z* B1 R) E
end;
4 S! H5 g. [- r (2) while <condition> loop
5 `% f3 }, h; G( r$ V <statement sequence1>;
. D2 D/ ~: a) Z/ J* n1 W4 H: |: U* q end;# C9 x/ d: ^! J
(3) repeat 4 L, z( Q' b: M8 F
<statement sequence1>;/ \3 ^' q4 R, q, V N
until <condition>;
+ h- P2 a- d$ i a! ]' i) X/ ` (4) for <condition> to <condition> loop) s$ K% z/ U8 r- c" E" e+ ~; O4 \% p$ x
<statement sequence1>;, r T% W9 w9 k0 w+ W L
next;9 }; N, w3 O: x
3中断语句
! z _' v7 q4 V) Z- Y4 W$ q waituntil <condition> prio <integer expression>;. B, X+ S. m4 g- I
' @1 W P' H' {# P
2 ?. n1 i& J: x+ J% F, @以上为常用的函数！
v" c" k3 k; D. H/ z' a还有很多，如有需要我把资料发到你邮箱里 ! Q0 A4 O$ v* O3 ~7 g8 K7 j T
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