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发表于 2012-11-13 08:48:12
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1判断语句! ~/ B* J% A; U6 ^ O$ i
if <condition> then
- Q, @+ g) c! k <statement sequence1>;
* s) } |" A3 y8 _# d' P elseif <condition> then
( d$ A. b I0 ^. W) }/ ` <statement sequence2>;5 f: `+ Q' V: Y! G, g+ l- p6 G
else
& m! O! W# K4 E. H2 E4 c4 E <statement sequence3>;6 z5 E5 W2 ]9 e7 T1 h
end;
6 {, `7 D3 v3 ]5 x( k如果分支比较多，用：
4 @% Z- D( t9 d' { inspect <expression>
& y/ M$ |$ N8 V, d/ b" x/ W, a when <constant_list> then* F7 l0 [" A9 _
<statement sequence1>;# }0 j/ Y* D+ M8 x2 \
when <constant_list> then9 T, N; J6 m+ ~2 q2 q/ m
<statement sequence2>;& S6 Y/ s" r4 T! C
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else
3 ~* q% W: G6 ]2 U4 Q+ U; F D) Q <statement sequence3>;
) X; w4 E) A6 E# Hend;
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$ o( S4 [7 g4 a- I2循环语句
$ n) ~8 P, S j3 X! g- g# M7 f (1) from <statement sequence1>
' n# c% K, Y3 W3 v) E: l until <condition> loop
- Z5 s* ]6 t2 @' o+ w- s/ l <statement sequence2>;
) O% L' z5 ` I6 w end;
2 Z& Y% M$ b) `8 _. | (2) while <condition> loop
/ @4 h! x0 a G/ Q+ q1 W <statement sequence1>;: Z! Q- ]( s$ g4 D4 t9 t0 B' Q3 b' p
end;
' g$ ?( ?" }( T; A3 M0 x (3) repeat # J) p! V, l9 J: t4 u, o: k. X
<statement sequence1>;
2 n! m8 ~6 w' H( d" O* S% M until <condition>;0 K( v6 J3 M+ b5 @( A2 f0 I
(4) for <condition> to <condition> loop2 n! z$ K/ D; S/ v+ ^4 C9 K
<statement sequence1>;
+ U$ ]3 T& Z2 F+ H5 f& c4 u next;
' L& X2 b4 S4 T0 R2 V" O4 q3中断语句9 @+ N! ?# e$ W7 b! ?
waituntil <condition> prio <integer expression>;0 L' h0 p8 L( @6 x2 W8 v
) S3 ^7 ~: S8 z& F: V" L6 l, w& f7 V8 L! ?
以上为常用的函数！* o' M$ N6 s( Q: A
还有很多，如有需要我把资料发到你邮箱里 9 C3 e4 M; ]9 {+ A- @5 o5 N
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