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发表于 2012-11-13 08:48:12
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1判断语句: m; t6 E; \6 r' B# n! a; \
if <condition> then# N- j, j/ w0 `5 v
<statement sequence1>;. o6 e; p u5 k
elseif <condition> then8 O( Y6 w& W! v& A6 R3 a$ v5 r
<statement sequence2>;. Y" R# \* T5 o
else # H! c8 p. {. r/ N
<statement sequence3>;6 A+ a4 Z' Q; q" X. P, n) L }
end;2 f8 y4 M W- b' M) B
如果分支比较多，用：
- S+ J; J) Z; w5 C- S, B! [! Y inspect <expression>
9 X; z: V7 h% I' U ` when <constant_list> then0 u1 N2 Y. p3 U8 k' s
<statement sequence1>;, L* e& d% Z; p- V, O0 L; N: f
when <constant_list> then
: D$ U! ?5 [4 c& X4 [* Z3 L0 j; `! E <statement sequence2>;
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else2 W6 Z+ \! e+ |
<statement sequence3>;
6 b. E1 j7 o2 |end;
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: z. J2 a2 A3 g* o: Q3 a2循环语句. `+ y5 A1 v9 u) d0 z
(1) from <statement sequence1>
$ R& c& f1 B* x& ?9 T6 m2 K/ l until <condition> loop
4 Z8 X4 A* J, _+ Q <statement sequence2>; d$ q- |3 a# C8 ], _ w- B
end;- ^# ~8 U. @) _
(2) while <condition> loop
" f9 |2 r0 [- C$ C3 v# [ L <statement sequence1>;4 G& b$ i1 c: M: ]: v
end;6 C2 B, b" Q! T5 Q8 Y0 G
(3) repeat 7 Q! j3 y, ^( I. H2 R! h7 p; v$ J
<statement sequence1>;' |, I+ g# X |9 ~
until <condition>; F- c, }* Y& b" l7 ?
(4) for <condition> to <condition> loop3 P L" k/ f6 y
<statement sequence1>;( m1 U. ~+ s- t; L1 G! I
next;6 {& n0 s4 C# F6 z O5 B+ }
3中断语句
9 D; M" I5 \( ]* G waituntil <condition> prio <integer expression>;
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. \- H& ]) x3 B3 L. q3 T以上为常用的函数！& [& n6 P! L5 p; E) |( B. x
还有很多，如有需要我把资料发到你邮箱里
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