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发表于 2012-11-13 08:48:12
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1判断语句" c8 R4 {& [' f3 a6 M
if <condition> then( D: C: v/ L9 A! |6 H
<statement sequence1>;
7 Q9 X: E; ^3 ~. V9 D- ~9 T elseif <condition> then
! x: A& Y/ A# t <statement sequence2>;
) s6 e; }0 n8 x0 }6 d! ^& h$ z0 G' ~ else
. m, y# s6 ?% W9 j <statement sequence3>;" r# X6 Z+ k) j$ N- v$ {
end;
' {/ |# @* I- Y) I. @5 X) s如果分支比较多，用：
5 d) a; Z2 x4 c) _2 l inspect <expression>8 I- z$ D" @! @, |
when <constant_list> then) o) c0 T3 n! p) D. r
<statement sequence1>;
m! I) g( {+ D when <constant_list> then3 Y& }3 u4 t' G, E o4 L, Q
<statement sequence2>;
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else. B* L# M, a I
<statement sequence3>;! O5 \; D+ \* A6 G% o
end;
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8 a- p" X- {, W Q2循环语句
/ Y8 i* z$ [* {( G1 \& y7 | (1) from <statement sequence1>
1 U! D, f! }7 c; @5 M; j- U until <condition> loop% m4 L. E0 X' V. {& U3 f
<statement sequence2>;
' |" Z ?& g8 z! G* Y: u end;* E6 M+ r3 T$ s5 i% Y+ k! t% {1 j
(2) while <condition> loop
2 v6 ^$ {/ D6 L: H: q# L <statement sequence1>;/ f# ^1 b3 |$ ?* d' @$ s
end;
4 j: f7 u* W6 N4 ~( D7 t (3) repeat 2 z* g1 E0 m& e$ \
<statement sequence1>;
7 W" P$ v) Q! P, _ until <condition>;
8 \# ~6 S2 ~0 M0 m5 p: e (4) for <condition> to <condition> loop
0 \6 W& \9 u+ q ^) n; b, P <statement sequence1>;. w3 o5 {; T% r i2 A
next;+ ^! F1 e& i, t( m8 [( w0 t
3中断语句
' J1 Q$ V+ W$ R3 w* q! q/ ~ waituntil <condition> prio <integer expression>;7 C& C8 ~* x2 R, S& b( k
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以上为常用的函数！
. {" F8 B( v7 q还有很多，如有需要我把资料发到你邮箱里 - M l- j1 ]5 G4 \( p$ W3 V
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