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发表于 2012-11-13 08:48:12
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1判断语句
: ^* l* F4 U( Z. S# ^$ f# K if <condition> then: x) E; A! v9 E# r
<statement sequence1>;
/ }- {9 V) T2 i4 x elseif <condition> then
! r: A s. K( A: \2 ?4 l% }* @9 D <statement sequence2>;8 p3 F1 n) k, D' j% o% S
else
' J9 n: ~" o& i( l7 T* v8 ~ x <statement sequence3>;$ @; G( i0 H8 Q; k7 v0 d4 b
end;
& R& l/ |9 Z7 }5 \% n, C; Q如果分支比较多，用：
7 G! \; s. S2 H) w inspect <expression>
2 J1 p$ S- B8 Q3 ^* h+ s when <constant_list> then
/ P$ w$ R8 G; @' A5 h. j' f <statement sequence1>;, p" \& [8 _6 C# P1 V
when <constant_list> then
; n; U; c7 }; [. M* k0 g8 T1 E <statement sequence2>;; H; b: j1 M) t
...
6 B$ T2 w4 Z! O. b! D/ k2 R o else. Z3 N, d J* I" @3 `9 n2 H0 D
<statement sequence3>;
- v: x; @: q7 l4 rend;
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2循环语句+ \: V2 Q9 }6 M2 d: m6 s
(1) from <statement sequence1>0 h; H( D# p+ A9 o4 o& c
until <condition> loop
+ N) u. u* x' N1 T& d <statement sequence2>;0 j* K/ s. W+ Q: D* _1 h1 Y; O, b1 ]5 s
end;
* F4 L; B9 u% K A& P (2) while <condition> loop( K0 A9 b% ~6 a) R& D" f
<statement sequence1>;* A) M, r1 F0 ~) U c0 b
end;
! v, u/ f0 o2 |8 u4 h, W1 L (3) repeat
1 w8 I, L$ U/ F0 i5 o <statement sequence1>;
! [* K4 F8 K& H5 L( l until <condition>;2 X% l: p, D# M* p' |. {
(4) for <condition> to <condition> loop S+ P/ W1 W# z% Q! m7 Q" I6 t
<statement sequence1>;/ c& ~8 u& ]0 C# i# x2 P
next;
( ]; M# v0 W- P+ `6 d- O# a# D3中断语句, B, R9 k; G! F; n h% z5 j
waituntil <condition> prio <integer expression>;
# |. O; m" m9 Y7 ^
3 j. S/ V/ h; |' l; }
1 _! o+ i5 ]" X7 a% Y& W以上为常用的函数！
0 h6 p4 ]6 {' t/ g: B. y( `还有很多，如有需要我把资料发到你邮箱里 : _5 a4 G9 x& ~7 S6 X1 [& k
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