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发表于 2012-11-13 08:48:12
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1判断语句
$ W9 b, S5 c$ ~* R* ]; J- ? if <condition> then
4 G/ H3 Q1 O: N4 @6 S X <statement sequence1>;8 b$ r1 e) [/ w
elseif <condition> then
* a6 p. J9 u- I/ p <statement sequence2>;
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<statement sequence3>;, L: L; _& F6 H$ {6 d; Y3 t
end;* a( F% X: Z# R# V3 N* B
如果分支比较多，用： s: c" L! d7 ^% }9 m
inspect <expression> h0 A3 e- t2 K6 ]8 i0 {
when <constant_list> then. q& R; r7 E( S9 b
<statement sequence1>;
' W" r2 C1 }1 S9 \& j when <constant_list> then- K( p8 W7 G7 [4 P; }* _) j
<statement sequence2>;
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else- {" o+ x j1 B" T8 j& Y: C3 w
<statement sequence3>;1 ]6 C0 h: L8 I' I
end;! D) a1 D3 C+ s
. v/ Q7 @' L+ J! ]& O( q4 y2循环语句: ]& B; }' ?, G, _
(1) from <statement sequence1>( s5 K% j S$ }+ ?8 t
until <condition> loop
1 j0 \3 ^- g l& }& `+ [) A; N <statement sequence2>;
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(2) while <condition> loop$ l# ?% [$ L3 C% H8 N, z
<statement sequence1>;4 P" }. ~5 R* U$ U8 _: P) h1 {% I
end;% u7 m; X4 {0 d" R2 _( d
(3) repeat
9 u, ^. o& i8 }) v: D% ~" k9 z1 l+ w <statement sequence1>;1 M- J+ `, O" `4 o, d+ e" |
until <condition>;' p. I; J- m t# S- D/ y
(4) for <condition> to <condition> loop
. I* c9 h3 ?- w) | L8 @ <statement sequence1>;* m3 B2 p+ f& R; d% e/ t. o
next;: m$ m" j2 |. e/ k0 O% W0 q
3中断语句) U/ R! S1 B, y0 V+ ^+ s
waituntil <condition> prio <integer expression>;
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* [; ^% _+ t7 L5 m! E5 V以上为常用的函数！
+ p( f+ ~3 A8 ~7 v6 p* R还有很多，如有需要我把资料发到你邮箱里 * x; k7 o# Y( }8 V
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