|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句
6 r$ A* f# O* i- q$ h* t0 ^% j if <condition> then3 g/ c! L- M2 u% k
<statement sequence1>; a1 y# ?# ]/ X1 u0 V1 r& w
elseif <condition> then1 o3 l( c" \! o- n4 t
<statement sequence2>;+ v4 u: y2 q3 N+ m a
else
. A8 [3 p6 K4 U! X9 w <statement sequence3>;* y0 Q& s% t* j. u
end;" s* f8 ]/ N9 \9 V
如果分支比较多，用：
; i- }4 H3 Q3 o1 i! E7 K$ d: ~ inspect <expression>
# ?- L* w* t% A" i, b when <constant_list> then% v4 Q9 n: c* Q2 r5 J x3 h
<statement sequence1>;
# q; K; C9 p5 |+ M; Q- ^' t% G5 ^ when <constant_list> then( V( q! o5 P' t3 j- a
<statement sequence2>;
% X+ j4 Y2 }; s/ o& Y- v ...
& G* O) E9 W* Y% V$ c7 V8 P else
% y# ~5 I5 `( g* j/ e <statement sequence3>;& H, D' `- ~2 c& z5 k' g% L2 @) \
end;
R% p# Q# k+ D( g' A/ R1 `! Q) b6 _0 y1 b5 P
2循环语句/ _5 a7 Z- i0 C( w+ g+ Y2 C- r3 O
(1) from <statement sequence1>: s# G, u7 O$ y) M1 |
until <condition> loop
) L# q6 A; O, m: D% ?" x$ q <statement sequence2>;! a) i3 x/ W2 v3 h- M
end;9 E3 k" B! C E: N8 `8 N( `' c
(2) while <condition> loop# [5 F# F- }9 C+ j P
<statement sequence1>;" [, _: |; u, g/ g; F( o t6 o. E0 A
end;
2 t5 `) e* B& m( ?6 q8 ?$ a (3) repeat 4 G( {, O& m& W; O
<statement sequence1>;. B( ]: M9 h9 P- e4 J8 z& o2 |5 o
until <condition>;- o+ A8 t) a" A9 h0 g9 |. C1 o
(4) for <condition> to <condition> loop* |2 z: h7 F& i8 M+ B' t
<statement sequence1>;
8 `4 U# d A% o: t. M next;; [/ B4 v0 C; R# @+ `
3中断语句
$ B x! G, `1 C# {% Z' f waituntil <condition> prio <integer expression>;
4 h1 _) h6 X4 a- o" X! E
0 G& O( l+ h( V6 M8 A) u- ^: h' w# O
以上为常用的函数！
' i1 V6 K& x& b+ h5 B1 R' g& |还有很多，如有需要我把资料发到你邮箱里
* ^0 s. L9 v# { v' _! B5 `5 L2 _$ R& i; j
4 }$ E1 S* @& c* |# [0 Z( S$ S8 H
1 [& [8 j' ^2 R6 J2 ]4 W
# Y2 y( V* M, H4 j8 V! G; z9 q9 G) V% |! ], A K5 q- i
O& u: v G5 p6 z l. S- E* O% \7 B. q
1 Z' F( i: ^6 ~- ]' ?1 |1 D
* z5 K! d0 C. r8 L |) K, J
* s# ^( Z0 ~% r7 S6 \- _ X
|
|
[复制链接]
