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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
, `% K7 a% l1 Q: ] if <condition> then
0 M0 v4 W& I+ U% h. R: u9 ^1 p <statement sequence1>;
) B; r$ w! ^2 V4 `/ F8 H5 u$ I elseif <condition> then
8 ~9 V1 e% r! b1 H. _2 ] <statement sequence2>;3 [2 I0 Q7 E, N
else
1 u' e' ^) u4 N _ D+ a <statement sequence3>;0 g, n' E8 N4 \: t' l3 p( m5 [6 T
end;
& C, k1 ~ L5 J4 ?如果分支比较多，用：8 I& Y6 r6 h; O
inspect <expression>% w! a9 i( R2 U/ X- m v5 g
when <constant_list> then- K. h9 g" t7 _8 ^: ^$ C9 c
<statement sequence1>;, p9 S% k; j+ h2 q
when <constant_list> then' u2 n% g* y4 c! T' z. E; {4 w
<statement sequence2>;, ^- D3 Q5 C {' C
...
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<statement sequence3>;
8 q* c3 R- h5 fend;
3 z) ]4 [: R3 Q2 q' I" k4 _8 I) `- u! L0 K8 P) a8 }
2循环语句
5 C% N2 W) Y' v* Y (1) from <statement sequence1>
; O$ s3 H, n& V1 W; T8 U until <condition> loop
/ z9 |% `( u0 M U <statement sequence2>;- N3 j& R: @+ U' e/ ]
end;
8 _* r7 g( v/ A0 `8 b$ S# S (2) while <condition> loop
' e6 r# |0 ]( O2 N <statement sequence1>;
/ D2 Y+ X' R. | v end;& `2 _: O4 C% i) ]2 h4 m
(3) repeat - \9 j! V. w4 M) B
<statement sequence1>;) g' O+ @$ o) m; x) Q0 X* W1 n
until <condition>;6 u& ]5 s1 C7 ?* [. u6 S9 k) F; y
(4) for <condition> to <condition> loop) f6 c- c) r r, n: s* A* Z. _% }
<statement sequence1>;- h2 L! T! Q# B* U9 J
next;
' y* |- o4 @4 \- a% ^3中断语句8 B4 o1 [+ G1 q7 {
waituntil <condition> prio <integer expression>;& ?. N; t* L" e, p/ W! m8 w
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以上为常用的函数！
' ^. w3 K: N$ y- i还有很多，如有需要我把资料发到你邮箱里 % ]/ V$ H: X4 `1 c4 N3 M
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