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发表于 2012-11-13 08:48:12
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1判断语句- v) Y( L* D+ _9 f/ s* G3 T
if <condition> then' v0 w& y0 b5 S
<statement sequence1>;5 h8 V! o7 @) Q- z% q5 M( r/ K" M
elseif <condition> then% _; t" J N; A. A, W3 x3 N
<statement sequence2>;
- j8 ?: t3 T4 e1 P- w W$ i else
: r1 Y. z0 T+ _. i* ]3 v' }( n <statement sequence3>;
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如果分支比较多，用：
6 A1 i; {3 z/ M8 m1 v" b g5 T& n N inspect <expression>5 v$ X! |" q ]0 ^: K& M# f
when <constant_list> then
; a( }# T H1 A <statement sequence1>;
. [8 W6 ?. E' d! J when <constant_list> then) ^+ d/ `, S" g% q, S, x
<statement sequence2>;
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else& `/ x, N, n" s- @/ _ J1 ]
<statement sequence3>;* \' g; d) k- F6 }
end;; T; Z' ^4 ]0 {9 e- B
: w) S$ s9 |9 i/ K) W. j$ k2循环语句
0 h9 M$ j2 s7 y& U& n% d (1) from <statement sequence1> C4 v' d: A9 q9 e! s6 x* P% d7 u7 @
until <condition> loop
. w& b" q: E4 p8 a' }# G# B- G <statement sequence2>;0 a9 T" f1 S. @9 y/ W E
end;. I" q0 z8 d2 {$ M- j8 C& T
(2) while <condition> loop. e( M" b' p4 {$ j! f n( L
<statement sequence1>;
+ h' u- B: T4 F9 n2 |8 k% h end;
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<statement sequence1>;$ z" e) H" y9 i1 s& O
until <condition>;
7 c V& e W1 ^$ a; i* Q* u3 N0 C (4) for <condition> to <condition> loop
; g/ t% t2 U- c) F1 C$ K <statement sequence1>;7 d1 X: g+ N2 f w0 m+ `
next;
* z, H6 e9 A6 U# l+ j2 C$ B8 e3中断语句 ]2 } B) D, d) t, b8 j
waituntil <condition> prio <integer expression>;
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以上为常用的函数！
8 O- |& W5 s6 S还有很多，如有需要我把资料发到你邮箱里 + w' |, T U$ u0 h% _5 |+ m! h
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