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发表于 2012-11-13 08:48:12
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1判断语句
- q/ I" [" _3 Y; F+ ~ if <condition> then. {& x A# Z g
<statement sequence1>;; ^) P' a1 @5 ^
elseif <condition> then/ ~4 d: C: ?7 Y0 |$ C
<statement sequence2>;
6 |# t$ ^4 |6 S; Y2 s2 P else
8 i& G) T4 t/ j1 B2 B! k7 d6 T <statement sequence3>;6 Y+ g5 e" i9 ?( Z, c" n
end;8 g8 i" j5 l, {( N1 c% U
如果分支比较多，用：
; Z! q/ [4 c$ e9 F inspect <expression>
9 Y& D! J( d X; S! V3 U when <constant_list> then
4 Y' [# ]; B4 z, V5 d5 g <statement sequence1>;, c( ]3 G3 k) l2 B
when <constant_list> then0 v5 w+ P7 ~, M3 s& O8 z' F
<statement sequence2>;& w; ?- z' u$ i3 R& M% t. @
...
5 z/ ], S2 ~4 d( ~0 c$ |4 `8 Q else
5 N1 r2 f0 p/ ] O {9 r2 s9 D/ Q4 z <statement sequence3>;
, j o8 c3 |; e) {7 b- tend;
2 [7 i/ e+ o$ L- q- r8 p8 i; o3 n7 O Q
2循环语句
5 h; x% Z, P" n1 ~3 z! h# [ (1) from <statement sequence1>
) |3 H$ @7 F# F2 w until <condition> loop
# F; Q& h- u- N. X8 J% ^: d- g <statement sequence2>;
( I* E# W0 ^4 y& T$ m5 B end;2 g. o, S- |+ ^7 B1 V7 v
(2) while <condition> loop
( c# g& b% Y% J& T9 X. q/ b$ t$ Z <statement sequence1>;) u+ a: i; s! f4 r- u
end;
' @' L+ H1 ?2 Q8 |/ G: z Z, i (3) repeat ; x: I- S o- n
<statement sequence1>;
K- q0 E* @$ q1 B# ?9 ` until <condition>;
. g6 i+ Z' t( h/ C C (4) for <condition> to <condition> loop
& K& r/ a' o. v <statement sequence1>;7 f2 p4 M9 x5 h4 S/ w
next;
8 Y* R/ h( a' C# ]3中断语句2 t/ \) C0 ]! ^- `3 Q
waituntil <condition> prio <integer expression>;- h" Q$ Y' j) x2 D2 m; F/ R
( \* {/ A; S5 G/ M+ R+ o
$ N2 I. k8 s& L以上为常用的函数！% F3 W: t# J; y4 x+ F8 l( \
还有很多，如有需要我把资料发到你邮箱里
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