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发表于 2012-11-13 08:48:12
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1判断语句5 e8 w" o/ r! }+ l; h: j
if <condition> then
. K( K) M- f! N* a <statement sequence1>;0 D+ W2 a8 j4 X) I9 I; b- @" u
elseif <condition> then) ^, I, H$ x/ d# ?
<statement sequence2>;
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<statement sequence3>;
0 ?! m+ s4 `5 D" h end;
+ F* A/ O4 w+ y- l* r7 [) S* H如果分支比较多，用：
9 U$ S1 b" W% ^% k$ s, ~6 S3 K" F' o inspect <expression>1 f9 w' y: K3 P
when <constant_list> then
% d9 P. t9 |3 @% d0 `8 M, J <statement sequence1>;
]& p+ O7 a7 u) `2 N* p when <constant_list> then2 j/ @, u2 i4 O
<statement sequence2>;" G( n7 B' W$ |
...
2 `( c ^0 W% E" x$ r else
! t. C$ `* @2 j' }& R <statement sequence3>;
. f" @4 Y. @$ W$ U) z8 _end;# e$ j' |/ m2 [% s
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2循环语句
$ J5 i: t/ M; W6 Y) k# `7 t9 x" c (1) from <statement sequence1>. K; a/ b! W( a. E
until <condition> loop
* }, Q4 x" S0 b4 h! X) p; b7 w <statement sequence2>;# k& F) r( a, V a! b5 J9 c0 \3 [
end;9 a9 t3 T4 b- P, ^
(2) while <condition> loop
- s' O' {' S; D <statement sequence1>;, ?9 A( w: f8 t8 j' P3 R$ y4 Z! @ Y
end;: P) W. P) H3 m. F
(3) repeat 1 b4 I* p- V" d- S% p
<statement sequence1>;' M+ o* X" Y! P |4 j+ z }
until <condition>;# A9 i' I1 p) G! y1 Z! W1 C
(4) for <condition> to <condition> loop
! P: A& i r1 G/ t3 v7 ?5 ^ <statement sequence1>;7 K# S, V0 ^( @9 \) a
next;: i) ^4 P6 [4 s. q8 {9 ^% k
3中断语句3 P3 q! `7 ~7 S8 ]+ V8 V. ], T. F
waituntil <condition> prio <integer expression>;
; d: i/ z( a2 `; I: k$ G$ v" I8 U/ i% F* t9 @. w' g) d
2 Z& |2 U) A& S) @) K. O: I以上为常用的函数！
0 p& m( m3 `( w; z; m; T/ O! T还有很多，如有需要我把资料发到你邮箱里
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