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发表于 2012-11-13 08:48:12
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1判断语句
2 G( A7 H* D. I P M if <condition> then
3 C4 I" d- m+ ~3 d4 m/ G# P8 n1 Z <statement sequence1>;1 h/ |' x: N6 G" d
elseif <condition> then
# J: l: ]9 N6 P. ?! A: E% E2 T- r <statement sequence2>;9 P& t5 ?; Y* S3 V% u
else ! C0 w* D1 k. P+ M8 c* U( Z
<statement sequence3>;6 t u9 Q3 n+ D, I, Z" x% w; X7 I
end;, `# Z& g5 y/ m5 h, w, o! t+ A- n, }
如果分支比较多，用：
* F) S7 Q2 i0 e) v# h1 w inspect <expression>( y# I' a5 C* f/ p4 r8 v
when <constant_list> then
8 s% w0 q. q% u5 a E* V3 Y <statement sequence1>;
5 X1 p+ K1 H9 J; x when <constant_list> then9 g. |% z2 I2 v! y- W2 W S
<statement sequence2>;7 l; U1 c+ Y7 R8 v: z
...
+ x5 L; ~2 D! r6 z' n9 a$ z else
+ z4 E: |2 D: x% ~3 O <statement sequence3>;; ]: h+ n5 t" i$ i4 v6 _
end;( j3 F' a+ y* I, u7 p0 ^. n8 j/ \
/ E* U$ {$ t2 ?2循环语句; Q, P7 a/ E9 X6 y
(1) from <statement sequence1>' s* v, ^( Y5 U( L( K: u
until <condition> loop
0 t8 |2 t% h, o- f% L <statement sequence2>;! a9 R2 j! a$ \0 c( F1 d% r3 W5 Q
end;
9 p5 o$ ~3 T( i. F' I! b7 q+ U ~ (2) while <condition> loop
3 V9 Q, y% G! i) o. K$ ~ <statement sequence1>;& v+ b+ W7 [+ I8 Y: `
end;
. T3 D$ P- U) @4 S* S (3) repeat 9 \9 o( y2 g4 O. ~% a- Z# h
<statement sequence1>;, d. s$ B5 [% C; R( p. U
until <condition>;
( B2 |+ d* ^5 _ (4) for <condition> to <condition> loop. k& x: Z: N, u. V: k8 Q
<statement sequence1>;5 O& [$ x8 R8 @; h2 a; B; l
next;
' x& M1 \2 O8 [# g" c3中断语句8 ]2 Y `. [% _0 F
waituntil <condition> prio <integer expression>;
6 O0 M/ O8 W8 g7 `9 D, \1 Z9 N+ v0 t3 Z: A% g1 N" [) N
. O1 r1 b) W: {4 l- ]以上为常用的函数！5 K! b! w, E7 @* Z* ~, B
还有很多，如有需要我把资料发到你邮箱里 4 j- F( J+ ^5 p5 c1 h+ B
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