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发表于 2012-11-13 08:48:12
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1判断语句
$ J% `0 |1 t2 i- }7 G* X if <condition> then9 m' v: w+ g/ l$ D& O4 L
<statement sequence1>;
( [- Y' ?" ^& b" P% u) F( g" w M, M elseif <condition> then
9 p0 o) w7 R- F$ q3 \+ G6 N# d/ T7 h <statement sequence2>;
: m" p: r" E/ U0 K+ f5 x else
7 L) S: ~+ c* e3 B/ f5 A0 i9 | <statement sequence3>;
) l+ \( g: R8 D4 i; x" A# }4 f end;* }" d( [: `4 J: u8 t0 D) i) {
如果分支比较多，用：
6 @6 ?# Q) ?0 B( k' q6 Z" I I2 ]8 n inspect <expression>1 z) `* T" o3 G' v$ ]( H; n
when <constant_list> then
' H* j$ V: p# K }' S4 o <statement sequence1>;1 r) W6 M: Z' l( C4 q0 V8 q
when <constant_list> then
" @ `, Z2 l* h& M c" d <statement sequence2>;0 n4 d! m: i' g+ i
...2 F' E- n2 P2 X3 ?
else
# C* ]# \ `5 @9 L1 w <statement sequence3>;- E3 U3 x9 j6 |; ]- x; G
end;" P, E1 H' E) m
1 V W! a2 g) L7 i2循环语句
1 ^& M; g* \& S m* N/ b8 Z (1) from <statement sequence1>
% h. h0 Z: B5 m3 N8 J0 j. A& \ until <condition> loop9 c7 N+ a% {/ I: x) j! x
<statement sequence2>;
! w9 u* |4 X6 @ end;
# |9 _% k% ?, H% I (2) while <condition> loop( |4 z2 K* s8 G1 b
<statement sequence1>;
4 c& f& D a& c0 p end;( O5 F' A% {8 c0 h0 ^4 Y: t
(3) repeat ' B9 j) W; V5 [0 D* a
<statement sequence1>;
7 ~, O2 }+ `4 J5 d* `9 y until <condition>;& ^+ A j0 a6 `
(4) for <condition> to <condition> loop p" R3 D/ n, ~
<statement sequence1>;
. r- F4 m( _& \# I& G% p next;8 F' s" @! [. C9 L0 B% g
3中断语句
& k1 o) z9 O- n% h. b ~) M% @0 V( k waituntil <condition> prio <integer expression>;+ G3 ~1 P% h/ |. c) u' y
" l7 v. l# w8 E8 C5 N5 K
+ s6 h. D6 R4 I( G ?' ]! v: c以上为常用的函数！7 v J0 F5 E J6 c8 p$ N5 X
还有很多，如有需要我把资料发到你邮箱里
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+ s8 L6 b! j8 Q h8 [! p: C' b W* z! x9 j2 I" K( Y' G- l1 Z }
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