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发表于 2012-11-13 08:48:12
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1判断语句2 b4 v- R/ H z
if <condition> then6 m9 V- ]( `3 ~9 G5 \. g4 {
<statement sequence1>;7 t3 }* w% p4 {9 k/ a( Y
elseif <condition> then$ h) \1 x; i" g; T+ N" S% D p
<statement sequence2>;9 ]1 m, r. m5 t- f$ h) T
else * L3 L( a! C5 o, `- a
<statement sequence3>;6 v; p3 @ w. e0 D8 [; w& e
end;
# ?, ^4 t& d; R) h* j( y8 _8 G* d如果分支比较多，用：
, A) B1 i5 ]# y U1 n& u inspect <expression>
9 w U, |9 ~0 ?% ^ K when <constant_list> then
+ F8 B* i2 ~+ f; r' O; f" O0 S9 f& B <statement sequence1>;$ J3 {5 c; Z3 x; A% g& p
when <constant_list> then
! A& K% s2 I# P$ Y; | <statement sequence2>;. `5 U. [% e) [+ l% h
...
5 u Z- t% A v O7 D' B$ J- a else
# ~) P& y0 A2 k& y <statement sequence3>;2 O3 ^; w; C0 l3 i: W+ E: K
end;
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$ E& B; u$ ~& e# g& ] n4 l2循环语句 z6 o+ _' z+ b, b! z7 i2 X/ T, f
(1) from <statement sequence1>
/ x k6 e% ^7 q% T until <condition> loop; V6 N2 l5 {: V7 Y. i( R7 W- w
<statement sequence2>;
9 q9 e6 \$ H, N( T' N0 A7 x end;
2 ^8 {3 x. p" F1 x$ a) d, ^ (2) while <condition> loop) p3 a# u2 E# U# M1 C+ w2 o0 j$ [. e
<statement sequence1>;/ d# _2 |5 \( [4 G2 V; _* Z, ]
end;! q9 ?# A+ g: b9 h3 G* k w* J
(3) repeat
3 o3 g0 d/ b! w4 n, W9 u2 R+ u <statement sequence1>;3 s+ i$ ^. S j9 \4 Z: V
until <condition>;$ ?; p ^4 L& R
(4) for <condition> to <condition> loop6 }; x/ j+ S1 A2 S/ \" D3 G7 j1 p2 C
<statement sequence1>;
! j* w0 |+ Y/ q! K8 I next;
' d2 ^* V/ L7 Y4 Q3中断语句+ A5 ~! {7 R# a; u: O7 L0 w- {
waituntil <condition> prio <integer expression>;
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2 k# E& ~3 R8 J2 x/ J. M# p% \
( Q* j# V/ ^1 ?$ M' n以上为常用的函数！8 g9 R! s: {) ]% ?0 b; D4 G
还有很多，如有需要我把资料发到你邮箱里 ) }8 p8 g: H1 v) K
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