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发表于 2012-11-13 08:48:12
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1判断语句
+ J, ]. w9 S& x0 V1 W' h if <condition> then* ^' F. e" d0 `
<statement sequence1>;2 F! o- B) S" E0 e5 }1 t
elseif <condition> then
) \' i! m# A5 _ <statement sequence2>;
5 h! G% L; J* ~* B: _ else 4 G O# _' m& e: k
<statement sequence3>;: f( N/ e6 r$ A0 n/ Q B
end;
1 u8 b# l0 Z8 S; u- E. Q8 `如果分支比较多，用：
" i( @# B1 H- ^' c4 | inspect <expression>
3 {# O5 w2 b8 @& G$ m when <constant_list> then) j/ R. q: `+ g% e! G9 y+ d9 \6 P. D
<statement sequence1>;3 K. Q9 H8 ?$ ~- l1 x# P2 P, F
when <constant_list> then7 ^# ~+ P' i& |0 F6 B k; H
<statement sequence2>;
3 `0 V- v" b3 Z3 d ...
4 n* a1 y6 q7 p- S9 T9 r) t( b else2 }7 y; P# J# G1 h: I
<statement sequence3>;6 k% C4 `3 v1 |) \" J/ \/ M, a
end;, O/ A( y( u) X2 k" v# v
, L) u- P- A$ G+ T- ^2 D: K8 {, z2循环语句6 W: }+ u# U' b- g
(1) from <statement sequence1>
. I. ^2 h# p; Z& f K# u until <condition> loop
. M) V0 |1 r5 X) \7 W9 i4 s <statement sequence2>;
/ f8 {! j3 h$ k F c) Q+ j5 Q& N end;
/ {/ x) m! K- ^# \, ~ (2) while <condition> loop
7 U6 j% x6 j+ u0 [5 n <statement sequence1>;
( _0 ]5 V1 ?/ P" Q2 U0 i; W) w end;
b& N7 V/ k0 o5 a3 `+ O4 W" @ (3) repeat / w1 ]! o) x/ E% G
<statement sequence1>;9 `, E x( S2 b% E7 W+ ?
until <condition>;
: q! E: n; x. Y (4) for <condition> to <condition> loop
7 p! H5 Y* c" F0 v: u <statement sequence1>;+ `( U, n# |" Y) Z# _ s8 f2 e
next;
' l8 Q' N' ~# E7 U( _3中断语句
1 A- C8 B) B+ k, D' J waituntil <condition> prio <integer expression>;' F) I; F; f4 p" p) t9 A6 X% D [
1 l5 \! g+ H0 ~( e. b) |% N/ m3 M( c" X
; L$ Z e: z5 m
以上为常用的函数！$ n% }$ Q7 y" Z+ k
还有很多，如有需要我把资料发到你邮箱里 ( T+ w2 z' x; J/ r) w; S8 t
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