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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
2 k0 M8 v2 q/ c$ [" T( \( f- l! E! t- q if <condition> then# }4 L1 ]; e0 ]
<statement sequence1>;( k; x5 e9 W! ^* T5 v. w, U% C" J
elseif <condition> then% q" O- k$ t1 k7 w" F' v
<statement sequence2>;
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<statement sequence3>;
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如果分支比较多，用：: N, n8 b+ K1 w+ L5 ]! \0 h& F
inspect <expression>
2 z6 W$ L1 U* j when <constant_list> then, L. h1 P E5 `/ H) d: L' O
<statement sequence1>;6 M% d3 S/ E% {
when <constant_list> then+ T: y. E6 j1 G7 s
<statement sequence2>;: ^+ B4 r/ |4 F" a& `7 \% z+ D
...
! @7 t/ y" R. l$ K0 Y else
) M' z) w, C) x- q) b2 F% W0 M; L <statement sequence3>;# i( t) ?6 I5 ] i/ k
end;
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2循环语句
$ Z- B: j& V) ]# k+ ^ (1) from <statement sequence1>$ | i1 S, d) o3 }" A/ n, N5 X
until <condition> loop
Z% N$ N/ p @' n; F6 k/ l <statement sequence2>;% Y4 { H, k* ~ j1 N1 b
end; `9 k$ f0 s3 p' i; w
(2) while <condition> loop
1 b' f4 A, A! I- c* v <statement sequence1>;& ?* I& v' A/ X; H, P2 a$ ~
end;
5 J8 A4 ?- M1 c4 S- f (3) repeat * j; O8 Z4 D/ y3 j3 M5 ]
<statement sequence1>;8 q* U5 w5 S9 r$ B- j" g4 L/ Z
until <condition>;& U8 m/ H" e1 s5 C# G, a3 E
(4) for <condition> to <condition> loop
2 f& I% g |. S" N9 i <statement sequence1>;
! Y$ D' F- J5 O) V7 {5 V/ j next;2 w* K8 W5 p7 |
3中断语句2 C! ^, y8 S5 {( ~+ e
waituntil <condition> prio <integer expression>;
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3 H: V; X: n6 Z以上为常用的函数！
$ d8 \' k" f: x/ Q5 N3 G- Y还有很多，如有需要我把资料发到你邮箱里 % z6 U5 I1 C- o' o. x# G( R0 Z4 L
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