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发表于 2012-11-13 08:48:12
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1判断语句6 D3 y6 e- A% L6 p. g* z, k
if <condition> then- G. @4 h; E: D* c& W/ @ u
<statement sequence1>;
+ T+ a/ ]: s3 O/ Q' w% } elseif <condition> then; C7 i6 a E- {) p
<statement sequence2>;* g3 L8 i; B" _9 ?
else % m: V9 e- X* e& v! x q6 i
<statement sequence3>;8 H% M: }- }# o8 p1 x4 v
end;
/ m) v% v: A- d0 A! m) {9 g如果分支比较多，用：* Z+ x' ]0 {4 k7 r, W
inspect <expression>! {) g2 s6 H# [
when <constant_list> then
0 X- r, e& h, K <statement sequence1>;
' e& o1 R, Y, H when <constant_list> then
' E& y' a0 Z j4 @ <statement sequence2>;+ Q: [! y$ a c' W
..., w# Y) Y6 _. |
else
- [+ @: b$ J7 d0 \0 j <statement sequence3>;
8 I1 [, d$ x3 Yend;
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1 j/ x4 w0 y+ S! Y* L2循环语句
8 E1 n" Z- n- G$ U) s (1) from <statement sequence1>2 ]1 A! ]3 S( f3 L9 f
until <condition> loop7 q" q( v+ G/ @
<statement sequence2>;
" V) d. c# O" c7 `5 r end;
( H/ B, S( G: ^! ]- J0 b- G9 T$ g. j (2) while <condition> loop$ z9 z+ q1 e4 n' `( n2 [
<statement sequence1>;
, j+ M/ a ^; K, R4 F" I; }! U end;# u* o4 j/ G! I: e# P
(3) repeat 0 q$ V( t: ?" b; z3 Z4 U
<statement sequence1>;
5 U: H$ \2 F; |! E1 L% E until <condition>;
: e3 H5 k. @/ x$ z' S! E1 F% W7 i (4) for <condition> to <condition> loop- a8 |4 P" Z- p3 D9 \$ |1 u% F2 v9 _
<statement sequence1>;1 z, T7 ^, U8 I/ c
next;
5 ~8 O1 z- m7 J2 ~( r3中断语句" ^3 U2 l7 G, O
waituntil <condition> prio <integer expression>;) e g: X/ P& ~! t7 l7 Y7 _
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% q' `* E6 K5 J, ~, c以上为常用的函数！) U: ~1 N% n5 X8 ]8 Y( x; j
还有很多，如有需要我把资料发到你邮箱里 9 w8 r( U* y, U
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