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发表于 2012-11-13 08:48:12
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1判断语句7 I% }7 |* v' h' J
if <condition> then
6 X9 b) n% N5 z1 _* q* z# o2 ?4 v t <statement sequence1>;
$ d6 P$ s3 X3 O elseif <condition> then
. h2 K$ Z2 n7 I5 B- j5 t <statement sequence2>;
$ a0 j& _5 L5 R' B8 u else
% O @* f+ E) V% ?$ E ~) | <statement sequence3>;6 E; |8 x' m j8 C# `
end;* o; R M! a7 G' [+ A
如果分支比较多，用：
* n1 a8 I2 B9 o* j inspect <expression>. e& G2 O; u5 e% Q$ q: |; Z
when <constant_list> then
& q) \6 X) E4 ?, d' C' N <statement sequence1>;
$ E8 W6 e E! Y* M* M( C when <constant_list> then# S4 J; ?' K. t3 K& h0 Q
<statement sequence2>;( w4 w% y: I# S: I
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else
( w4 N9 G) t9 e, m <statement sequence3>;
' r# P3 V5 O! d' e: w' e; q8 \0 Y) \end;
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5 v! O3 y8 f7 C- F2循环语句
9 x9 Y' M( Q% H3 G (1) from <statement sequence1>' R E* F, e! e
until <condition> loop
) ^7 V6 ~0 w$ d, s& ]+ `( t <statement sequence2>;9 y3 D/ @! z+ x$ V- l6 x$ Z% i
end;
! R9 b, t4 t' G9 b, K) |8 { (2) while <condition> loop; @1 m# q9 ?1 T7 u
<statement sequence1>;
/ }( [& T" v0 W3 n end;) K& t6 }# X3 u! b
(3) repeat % r3 ]. z/ U0 S, Q
<statement sequence1>;
Z5 S9 _3 r$ r' S until <condition>;8 ?# [* F* ?) k F3 r f
(4) for <condition> to <condition> loop" k3 i: `' o( I+ o; W2 V
<statement sequence1>;7 d! u$ Z* }* z; \ K
next;1 u: k" Z& j3 m" i
3中断语句
: D/ l% Y/ D: d5 ? waituntil <condition> prio <integer expression>;
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以上为常用的函数！
8 M! v& C' J; z6 a还有很多，如有需要我把资料发到你邮箱里
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