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发表于 2012-11-13 08:48:12
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1判断语句4 W& t& B6 M k
if <condition> then
4 S$ \0 A- W( d& L. a <statement sequence1>;
+ l8 a. W! T- r: _$ g3 | elseif <condition> then& m/ A/ e+ x0 i" a
<statement sequence2>;
7 D- t! N" i1 R3 h) J8 E else
8 R/ `& H4 e6 t+ _2 H1 i) ]) |& z" I <statement sequence3>;
$ ]- m. N: r5 E0 A% K' V' |6 l end;
3 N2 O2 x. v/ X0 \; e2 G如果分支比较多，用：' g4 i$ l3 t( d q' L
inspect <expression>
9 W5 E, x8 ~ ~5 D* z when <constant_list> then
0 G0 H) p0 j3 W a; d, n7 q4 L0 x <statement sequence1>;
7 i: S4 K' X0 o2 f+ _ when <constant_list> then
2 `0 m- s1 t. a' a <statement sequence2>;! |0 [2 f! K( w) L" @! B6 y" ^% M
...4 o9 s, q6 `% w7 i
else
& k. [2 o, r3 i9 S5 Y5 \ <statement sequence3>;
! F9 |: |* |6 D5 Rend;
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$ v3 Y5 L. h3 D7 s( k2循环语句
. }0 m; P- ^$ h3 }. b4 Z) M (1) from <statement sequence1>' R" ^7 D5 A% K8 J8 X
until <condition> loop# K" M$ ^7 |: ~+ _" u
<statement sequence2>;$ h9 \, `* A0 [7 C- s; k
end;
- Y6 T. v* l8 I- }5 _$ l8 ^ (2) while <condition> loop
0 S% D( w) |* Y& H) Q* ` <statement sequence1>;4 r1 |) l- e7 E; c0 U
end;" n3 d7 X% H8 i/ |7 e
(3) repeat 5 R) n" z/ P. a1 f
<statement sequence1>;
7 [- \$ Z1 Y. T7 `$ x1 F! r7 G until <condition>;
4 u) _1 [ Y1 A (4) for <condition> to <condition> loop! F+ a) \' D6 [9 x0 h& X
<statement sequence1>; V5 A2 s$ u$ v& [( A
next;
( ~& U1 q( \2 b% ?# O8 V3 y) y! z3中断语句
5 c% Z- P; u. ^8 V! ^3 v waituntil <condition> prio <integer expression>;
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以上为常用的函数！8 |/ t( d# }" s% S
还有很多，如有需要我把资料发到你邮箱里 8 o/ P- Q, \ B- D9 r, l
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