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发表于 2012-11-13 08:48:12
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1判断语句% y; q- R3 K2 ?, W+ ~
if <condition> then3 ~" J) j- y9 v9 e! u9 L
<statement sequence1>;, l' N9 Q4 l4 ] _7 P! O' g
elseif <condition> then
/ Y! E& T+ o" H6 i4 Y0 l <statement sequence2>;9 m1 \6 H5 M# Z! a* G% A) k
else * H$ b4 C/ P$ d% g
<statement sequence3>;2 E3 a! h4 y& d" X9 _
end;6 b3 f4 A2 v6 b
如果分支比较多，用：
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when <constant_list> then. y0 D4 m, w5 ^$ l: l
<statement sequence1>;
& n) m- F6 m, q" D- b& P6 r when <constant_list> then/ q) m# l. y: F
<statement sequence2>;" Q+ Y4 C2 F( l0 Y8 `
...
3 E& v0 \- ^' D8 g K4 k5 d# ]% V else
: y" J: o! O: F6 D# f. Z' I <statement sequence3>;
: O$ t2 P8 K/ Q* Qend;
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2循环语句
1 Q# B1 F$ s9 Q9 Y+ R1 L; H (1) from <statement sequence1>$ \9 }" V1 n- K! f" h1 ?
until <condition> loop
- m2 K- k, d, R% e <statement sequence2>;
6 F3 m. E, v" o" \1 U; S end;
5 q9 Y) G5 _& X. Y. K0 R (2) while <condition> loop8 g, y. z# j' n" V8 E8 S% I
<statement sequence1>;$ j, a' ~! V- ^" |& y9 @
end;( H. H0 G9 t0 s. k' U
(3) repeat 7 a8 X$ J8 J/ }& B' Z1 e0 J
<statement sequence1>;
8 E7 o+ N* I* p! D A1 g until <condition>;- T% p* O/ ^9 p1 T# c; b
(4) for <condition> to <condition> loop u( l3 @6 p" I. Y
<statement sequence1>;( W# l4 { G& A# a8 x( P
next;
# q( b4 i4 A% W9 a7 P3中断语句
4 V8 a! t7 O/ S# f waituntil <condition> prio <integer expression>;
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以上为常用的函数！
1 B c3 W, B r6 P# {4 g$ f还有很多，如有需要我把资料发到你邮箱里
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