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发表于 2012-11-13 08:48:12
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1判断语句
( C R. F1 }2 k& a. D% O Q if <condition> then
( M5 m6 X) D) h, H <statement sequence1>;
+ k0 z& ~4 V9 _3 `/ x6 d elseif <condition> then+ }4 H% m( ?& [ f
<statement sequence2>;, ?/ v( u% Z* F# }5 K
else % n' @2 g, m0 E7 A
<statement sequence3>;+ x( W* e N8 q8 j5 B1 o1 W
end;3 }% ` R; U3 O1 X$ P" m
如果分支比较多，用：' V$ U; {9 l& ~6 I
inspect <expression>
7 W1 \7 l$ R' E5 }% n: B# \ when <constant_list> then
9 ?7 N2 k* A1 P* p, `$ Q- k <statement sequence1>;1 Q; R$ J, I; _' b7 z1 c
when <constant_list> then
( i" E* Q6 U6 \& a' w6 y% s" i <statement sequence2>;7 c1 f2 h" `! d, n4 a* `6 M/ r
...) ]. e5 l! a' L: |/ ^" ]
else
' k# x: O0 V( B <statement sequence3>;
& S$ ~' d, v( p4 ]- \9 J. ~7 Tend;/ I! B) f, F0 H1 ?
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2循环语句. f% u% ]2 w. D7 s( Z( a0 u+ {# h9 T$ [/ `
(1) from <statement sequence1>+ W0 N. m% q: m) {9 b
until <condition> loop
7 X, d$ g1 `! T8 E- H- T1 ~; \ <statement sequence2>;
% F' C1 z6 x) t3 \ end;
7 a8 C! k) e! R# h* H# n6 d% i (2) while <condition> loop# K, l' u& D: E0 p* E3 {3 m4 r
<statement sequence1>;
# {1 T5 k% g* y end;
5 F; v1 r$ N" @9 V2 ~# r8 s; d& r (3) repeat 9 I6 g# x- R/ V6 T) s6 W4 t0 U
<statement sequence1>;
R4 L& k& Z2 ]8 K( j$ T until <condition>;! J/ G# h, @* ?
(4) for <condition> to <condition> loop
' Z j5 Z. m( z& E1 q( ]- h <statement sequence1>;% A9 y/ r Z9 u; f# D
next;
. n9 Y: r" }! @$ f/ d3中断语句2 \& {8 }& j! O1 `
waituntil <condition> prio <integer expression>;6 l% d" Q8 a: j1 U
- B7 ^! X7 ~+ ?) B" y6 K3 ]) p, I/ b; ?
以上为常用的函数！
( O# R6 y k/ ^4 H8 a还有很多，如有需要我把资料发到你邮箱里 ! W l3 U5 M6 ~
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