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发表于 2012-11-13 08:48:12
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1判断语句
0 e2 ^! H" T4 ]6 K. O. J/ q' \8 o if <condition> then% k/ @% m# ~" e5 i" K3 C
<statement sequence1>;
, L% O2 E2 u9 A" i1 G elseif <condition> then
. r7 D" j3 q' r* h2 d <statement sequence2>;- ?/ o: L$ l) F
else % s8 E3 i! X3 X1 a5 F8 R7 \
<statement sequence3>;
6 p$ a5 t# B" b _* _+ Z$ W" }$ { end;
( l/ A% w' a6 _5 y) \如果分支比较多，用：
' ? M7 W( c% i$ j/ g, t inspect <expression>; a/ ~" W) x- W& F3 S/ Q3 q
when <constant_list> then6 i$ D- ^/ B6 \1 z; T% d
<statement sequence1>;
: R# A$ n' z8 Y6 G when <constant_list> then* _9 C2 f1 \4 |
<statement sequence2>;- V& Q! t4 d; m- u/ ~2 c: h
...1 \ |9 f; h- P' [; S
else$ E9 W1 b; q' F, S
<statement sequence3>;8 f: [- B5 _$ {9 E0 I0 ^
end;
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2循环语句
0 O. o' P3 `& l: ~9 o+ j) U5 ^% ` (1) from <statement sequence1> O0 ], _4 y# ?- ]+ M, M
until <condition> loop1 @ n9 |9 E% }) V( G
<statement sequence2>;' h9 c8 A$ U G
end; ~1 }$ Q" G, M" y- g# G
(2) while <condition> loop
- ~: t k2 g, P' Q! y <statement sequence1>;( y7 A. o% o" e) K9 {2 I
end;. {2 C+ c/ N- i9 K$ N" D
(3) repeat ( y1 m7 {9 {4 _3 Y
<statement sequence1>;0 l, b! q3 `1 P4 u
until <condition>;
( Z; R* q" B+ n }' z+ o (4) for <condition> to <condition> loop# n; w1 w6 k- p$ a8 Y
<statement sequence1>;( }- H$ ?% e( V( K8 D9 p
next;
- {3 V& s! Z, f8 M' ?! `+ Q6 q3中断语句: x% p' l' A. |
waituntil <condition> prio <integer expression>;
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以上为常用的函数！7 m( N, O2 z4 ~" z" \8 y
还有很多，如有需要我把资料发到你邮箱里 3 B8 i- L2 P3 g
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