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发表于 2012-11-13 08:48:12
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1判断语句: x+ l5 Z8 q+ ~2 U* U3 |5 m
if <condition> then
* I) v8 r8 `9 X' y& y. z <statement sequence1>;
# ?# U& O# P! y! {$ I. l8 P% F elseif <condition> then- }) s5 g1 g4 p3 R- O+ ]+ ?) C+ k
<statement sequence2>;$ f! P) _- G8 C& w2 N
else $ @# |7 U2 u& G" o" s: ^
<statement sequence3>;
$ r, W& G5 ]% d6 P( M9 o X$ l* g end;5 I! N1 e" X5 Q* d9 U0 w
如果分支比较多，用：& }* E$ Y0 Q+ y2 u& [. ?
inspect <expression>6 A+ J8 E: N1 t' R/ F- L
when <constant_list> then: a! m7 ?1 P8 I$ R: c
<statement sequence1>;# a* Q& |( w1 ~( ~
when <constant_list> then
$ X) |9 r# Y8 [, E4 x. q( @3 ` <statement sequence2>;8 k5 g1 ~4 \3 ]/ w
...* S: h, T- H/ J6 f( R
else/ y" g; x0 _9 t" x) w; H: J0 _# U/ ]
<statement sequence3>;$ h y6 O/ F n- `
end;2 D p$ o' V5 K; p/ x# b/ Q
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2循环语句
8 s( K6 t- H" t+ s2 y0 p0 v) |, e (1) from <statement sequence1>( M k8 K" U1 L+ u8 [
until <condition> loop
- M9 m* ]9 ]( X <statement sequence2>;
3 P' [6 J& q& A4 X4 D+ ]: N end;' \8 O c/ S9 @ o9 u0 Q7 H
(2) while <condition> loop$ n4 O0 U2 O: ?" P. w# i
<statement sequence1>;
+ Y$ k; B% @1 Q H' @ end;% |8 A/ _# W! c$ Y" r' k! t/ V7 n
(3) repeat ; C6 B( v- P) ^3 L! A8 o6 `1 `1 X
<statement sequence1>;0 k2 e$ C% ?% F6 u, @) \! {
until <condition>;
; S" M- a$ W7 W# Q g- q; \8 ` (4) for <condition> to <condition> loop* { j6 m1 e( d% U W6 G
<statement sequence1>;& c I; O* x- p/ U# {# P
next;
# _4 U$ Z! A# W6 X( l1 v2 X0 ]3中断语句
! q. u0 d/ W1 G4 S: o' g2 U0 Q waituntil <condition> prio <integer expression>;
$ l& Y4 [1 C3 b+ u
' ]( I; Y) I; c
. o) o' |+ j% b, p4 M4 }. w9 d: n以上为常用的函数！
3 j3 b: P; B- e: T9 P# z5 J& X还有很多，如有需要我把资料发到你邮箱里
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