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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
# S. N& c% Z' |8 D9 y if <condition> then( V& [' G9 u, O4 u
<statement sequence1>;
0 O. T$ j; b- m( G4 M0 ^$ A elseif <condition> then
' o" _1 B. S7 {! K6 Z# I <statement sequence2>;! ?8 l2 a4 e& C
else ! E6 ~, i9 a, D1 `0 \7 g
<statement sequence3>;
% a7 ~; C* t& R, L7 q# c8 H o1 z end;
N3 L, j1 g/ S& g8 Y( J9 E如果分支比较多，用：
6 [1 t& W3 k- v. N9 g inspect <expression>2 t: m0 A k( q3 B# s: K6 G- }: T2 Y
when <constant_list> then
' A7 @% j1 C1 }0 r <statement sequence1>;
) h- R% [' N" j7 K' Z! s: O8 g: W: X1 a when <constant_list> then( \+ X% O6 D8 n- G
<statement sequence2>; z8 \9 V# M1 x+ b
...% L: a2 ?# U. R. B5 j
else4 r% v: a* i! y- o
<statement sequence3>;
) P' l; |( A5 N3 E. R/ ?8 ?end;2 D. Y' g# m% }4 c$ Z$ y4 x0 R) J7 E
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2循环语句: X8 |* S% A( n* `' G: n
(1) from <statement sequence1>+ N1 F- _3 ~$ Z# s" S
until <condition> loop
- q* C8 ~2 f2 T3 a <statement sequence2>;
6 i: H; f v5 A/ { end;
3 S8 ~" v* a: h% h. J (2) while <condition> loop
6 |8 U( I9 L& d7 E/ C9 I% D) g <statement sequence1>;
7 j v7 k/ A- U$ U2 m end;
`! |2 E; ^2 l5 o8 y (3) repeat 6 ~! B {; ]+ }2 e8 B1 K }2 Q9 y
<statement sequence1>;$ n0 a7 h. T( a) c# T1 E
until <condition>;
% {4 @3 k% J( _; R+ c: c* P, m (4) for <condition> to <condition> loop5 t( i; u. e1 g- ]
<statement sequence1>;
( J% A6 O, F. E( ]! ^ next;# E* M! @! H9 L x* [! w2 h6 @
3中断语句
8 O5 M5 {6 S+ q. W5 Z waituntil <condition> prio <integer expression>;* O8 y0 M9 r$ Q6 y
: @7 T; S! R2 U
9 i* _+ U8 L6 E* H: N. {1 d: G以上为常用的函数！' Q) i! e$ ^0 }7 [' N2 i5 x
还有很多，如有需要我把资料发到你邮箱里
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