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发表于 2012-11-13 08:48:12
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1判断语句+ D- s8 B- u, M; y
if <condition> then) n; D; u# |: U) a& w
<statement sequence1>;% h3 j* w1 ]- K X
elseif <condition> then; U8 Y0 j& o/ n4 S$ s5 g. t8 M
<statement sequence2>;! X* x# A$ ` [% C+ ? E
else
- `/ C7 q+ j8 L" J; p0 f; Z <statement sequence3>;! C) q; H% N( z9 @ r1 h
end;/ R& x" |) }" e5 D
如果分支比较多，用：3 P1 o. w/ N0 @# Q1 U8 w
inspect <expression>
. K1 ~/ L6 z- |, N when <constant_list> then9 h: H4 `( C) R v$ ?
<statement sequence1>;* ^ b }- V, B5 P- @5 @7 O2 p' |$ V: B
when <constant_list> then
0 H/ u. P# a$ C* H0 J/ C7 m& ] <statement sequence2>;. w% s5 K) X9 }' z
.../ w5 B+ A8 b# n0 l
else
; V9 B. N2 |- u. s4 k <statement sequence3>;
& s1 W+ [0 Q# x' z5 r; ~end;
# {" v7 C7 I, C- \, e( z
- ?4 h+ s9 C0 e( ?2循环语句$ b* ?. {/ J7 Q
(1) from <statement sequence1>
$ c, D; O2 D7 J0 K8 P until <condition> loop
1 z) o" K/ g9 U& N2 L <statement sequence2>;+ m) z8 e% {$ q6 B
end; p1 m. w! Q; r* t4 W+ o
(2) while <condition> loop
! G) e% G7 _- R% c5 O( Y7 y <statement sequence1>;/ p3 N0 I3 b! [9 ]/ |" s0 _' a
end;, D: o4 c+ I9 E/ w8 l
(3) repeat ' x: ^* E5 b) m7 s* }5 [% L
<statement sequence1>;1 Q, v1 J. K+ E! ]3 r) J% S' K
until <condition>;! X; B3 w4 O0 z X; y( d. V
(4) for <condition> to <condition> loop
* E8 V- w9 B& @; W) T0 M0 t; r <statement sequence1>;
* S% w" F& P+ D, w& L next; d# t% U; ]8 H. y# C% [2 [4 r
3中断语句
2 L$ J1 e4 \: R: E3 P- Z waituntil <condition> prio <integer expression>;
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0 j6 D* J, q& E9 c' Y$ i$ u以上为常用的函数！
j" V2 Y: }( X3 u a( }还有很多，如有需要我把资料发到你邮箱里 ) i$ |7 u$ x; ~! j& U) h
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