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发表于 2012-11-13 08:48:12
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1判断语句1 n+ d% V# h7 t& P4 z+ t
if <condition> then/ z; L; v( w( G0 o& f2 \* M' J; G8 v
<statement sequence1>;
9 t5 l4 x" m5 ] l! z& ^ _. I3 o elseif <condition> then; y3 ~' A3 A, k0 D$ r
<statement sequence2>;6 y4 z$ E1 |! Z/ M
else
) n6 z- p8 \ x' r) U7 k <statement sequence3>;
9 q! p; ^- G8 h R& T! V2 p end;
; _; K7 a- t, V" _" h6 v! N如果分支比较多，用：7 C! e! ]2 {, u- k
inspect <expression>
7 j5 c" ~2 u" X+ v when <constant_list> then' ^- D( D# k6 G7 \
<statement sequence1>;& B) p% h) B# p# V3 `; {
when <constant_list> then4 t1 i+ Q7 t$ ~0 I' v% b9 B! r) d
<statement sequence2>;, }1 o* O6 W W/ E5 _9 Q
...
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<statement sequence3>;: I- _+ _: M$ ?5 r* J! o; q
end;
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3 `8 t3 ~0 j! f+ {1 I3 V2循环语句& a3 O; [2 M# V$ Q
(1) from <statement sequence1>2 u$ A# ? d: r' t6 S
until <condition> loop( B) {, ~, j# ~& P2 n+ v# J
<statement sequence2>;) Y- b. k- ]# r9 B& |. L3 x6 _
end;
" O: A. g& |7 b (2) while <condition> loop; M9 d# r# h4 C9 w# |) M
<statement sequence1>;1 F7 s2 U7 y8 W+ ]# d9 p* s
end;4 x# Q/ _5 u0 _$ B5 o
(3) repeat
' P; E8 c2 C* z2 u4 `$ D: z( t <statement sequence1>;4 V! _0 O6 Z0 g6 e) w* M9 p
until <condition>;
0 k1 g8 M! b/ w& |% g7 R8 K( B (4) for <condition> to <condition> loop4 C+ |0 Q5 I) }, B6 q( N8 ^
<statement sequence1>;
* J+ L; R' M: a! n2 E8 v next;
0 k/ r2 H- W$ Y3中断语句
2 N. \- N4 t. @* S waituntil <condition> prio <integer expression>;9 I6 `2 `3 U% S, Z a
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以上为常用的函数！3 X) M! Q2 W5 Y& A
还有很多，如有需要我把资料发到你邮箱里 * z8 Q* _9 g9 Z2 C2 F; W, R y" o
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