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发表于 2012-11-13 08:48:12
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1判断语句& H: [/ D+ s {: O/ j
if <condition> then) s% |9 ]( W) y$ p0 v. S' P
<statement sequence1>;
, u) j! E; t2 } elseif <condition> then
' M( u; j# I. X% A+ Q <statement sequence2>;; P% h# @5 e$ l K' I# B2 t% O
else . ~0 k' M+ o+ _( d( ?& v' T: h
<statement sequence3>;) R3 U6 u7 S/ C1 h
end;, F" P; u+ K% v1 ]; H1 N; D Z
如果分支比较多，用：
0 z8 f& P+ r0 K7 \0 K' a4 [: y5 Z inspect <expression>
4 b ?0 o( f4 c when <constant_list> then
! J+ _9 S6 a7 [ <statement sequence1>;! s7 O: |: ]7 l
when <constant_list> then% }* D: `6 ?9 _0 [1 f5 M3 U
<statement sequence2>;
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else
* ?3 q8 W, n, P: K0 D5 P. P <statement sequence3>;
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2循环语句' y% Y1 {' c: k3 `5 z& }
(1) from <statement sequence1># Q; x5 X, L" }! U
until <condition> loop4 F% J2 a9 @6 V8 t B7 @8 B
<statement sequence2>;
! e* j0 ?. [7 \( U. m end;
2 C% J# M9 ?& n8 W8 t% H (2) while <condition> loop! l% ]& h9 O+ W4 H ?- ^8 C
<statement sequence1>;% ]1 g7 w& n7 R3 a, c
end;
6 f: Q7 F3 k: ?* J (3) repeat
; Y6 f7 |+ G4 H/ F+ K9 T! o+ h <statement sequence1>;3 \: j- {5 M8 w6 ?, u
until <condition>;5 ?$ N% p6 a7 R% D' k
(4) for <condition> to <condition> loop
6 d* Y- Y5 ?0 O1 | <statement sequence1>;% R6 ?1 L: N2 X; w7 U/ m3 f6 |8 x, w
next;4 v3 [8 m7 z2 Y" D
3中断语句' F" E% R/ ^$ p. z
waituntil <condition> prio <integer expression>;
' }1 Q# `# E( A8 _) S" u6 E8 k4 D/ J1 X- r# g5 D# V& x) [
/ i8 F" D% @9 o4 a" U- Z以上为常用的函数！/ T9 C( i9 \$ o2 X; Y* T
还有很多，如有需要我把资料发到你邮箱里 & _- W6 j' D6 P# v( Q3 N+ N M% s
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