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发表于 2012-11-13 08:48:12
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1判断语句- _9 l; W2 l. L$ _& \! q9 t. m
if <condition> then X. B/ t! a+ \6 T
<statement sequence1>;; O3 P5 X6 _8 T2 t8 \- K" u
elseif <condition> then
% H$ _6 I, U1 U, R# ^. Q; Q9 h <statement sequence2>;
g* t' j/ a, X% | else 3 H7 e( i" f: C D- O8 B; ?
<statement sequence3>;$ a& ]6 Y" u0 m m& A
end;, N& p: B- s" T* }0 Y
如果分支比较多，用：
8 r* y9 m6 `1 t- D' ~% G8 [2 E% D inspect <expression>1 f) D9 v2 E0 |" N0 b8 n, g/ `
when <constant_list> then4 T& Z* [# l5 y! D5 U( R$ S
<statement sequence1>;
. O$ Y- |2 y- N7 G when <constant_list> then
- I, }3 c6 t" s* _1 @ <statement sequence2>;
+ E, T( X9 Q# q. q v8 W ...
F* K O0 m) Q r$ ] else" H/ P7 M* h1 K2 {
<statement sequence3>;( P3 O) x# f9 c% E; n
end;% [. g0 L, b- I* G8 _# m" a
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2循环语句
4 V" S! [+ W# o! G (1) from <statement sequence1>
7 A# y5 N+ s8 |( | until <condition> loop
+ ^* t! W* D; e9 w, l9 P <statement sequence2>;
2 h" f# Q/ v$ r6 ~ I: r" p; i# N end;
3 ?0 Q+ F/ V; G& a (2) while <condition> loop
% R3 r( a5 n5 r <statement sequence1>;
0 p& q' o& K: Y) Y end;
0 U; H% B, K$ ~! l1 g3 \0 L* ^ (3) repeat
. S% ]0 v: w2 g) d <statement sequence1>;
; g& x) o1 s, ~$ p: { until <condition>;2 x" Q; S) {- \* z: R! Z
(4) for <condition> to <condition> loop/ L( P5 D! |$ ^" ~0 k
<statement sequence1>;
x& |8 u. B5 D, V7 e next;
! o( _* j! J0 O7 x. [3中断语句
: c! S5 x6 W/ C& o1 ?5 D waituntil <condition> prio <integer expression>;0 P8 m" a0 G; W( o3 R
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! n+ S" G3 U1 H: }- a& `以上为常用的函数！6 {2 ?- W" u7 v6 k# |# c: j- F
还有很多，如有需要我把资料发到你邮箱里 9 p& F8 q) a5 d& Q0 a, Y
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