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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
: |* D Q; ?3 L3 x2 M! q if <condition> then
- x$ }/ ~1 }. s2 O5 d <statement sequence1>;1 [( W- ~( D* e5 Z# X1 n# u F
elseif <condition> then
. X" c) F- B! v8 v) b0 m. U3 } <statement sequence2>;
# L5 v/ C C' s |. R& Z0 ~ else " a* ^, S6 P" s) N8 y: a
<statement sequence3>;" h0 R8 x; _6 _) O
end;
: A# u' M, g E- p8 R如果分支比较多，用：- `/ b E) z7 H2 z2 T
inspect <expression>
/ L" y9 q9 m$ l3 f: `/ J when <constant_list> then
! [( k# h, \- z) _. i <statement sequence1>;
h" y8 c- `- a! [+ b. B when <constant_list> then
u. v! \" f/ L+ a: C <statement sequence2>;
1 h. M( P x/ }5 t ...
6 z Q: t, ? [6 c' W. _ else) r Y. x: r. L9 E* I [
<statement sequence3>;9 j6 q2 u9 _6 X
end;. r( t7 o8 X5 G, V
! O* K9 ^/ L3 Z- Y! q2循环语句* I6 w& B" B" v. d1 Z9 w7 T6 X: J, S
(1) from <statement sequence1>1 @/ X9 z" n" U% b+ e7 t c" _
until <condition> loop( j) i: b* z5 z; m9 n) `# f; U: a
<statement sequence2>;
: n% w; d0 R9 z end;7 m' H! B8 Q+ d+ ]! d3 g* A. K
(2) while <condition> loop) s; A$ \8 {! u/ `6 F
<statement sequence1>;( \' i& @0 V% t/ ~& z
end;
" @" V( w$ W$ f: Z* e2 M: ~ (3) repeat
- I2 D% u; M, F- R h <statement sequence1>;
* K0 @# S* ] c2 S w- y3 E: k until <condition>;( W3 |- \6 i6 y: ^6 _. V- ]
(4) for <condition> to <condition> loop
. M. j l! X3 B/ C7 Q7 t) g <statement sequence1>;
, g& H0 D5 o% L2 K8 U2 X next;" p1 y6 Y4 p6 u0 [6 q8 v
3中断语句
. R' n1 u0 X- `( H' O3 w4 ~ waituntil <condition> prio <integer expression>;# w. \$ \/ g! m; ]" }( P
: y0 S0 I: ^9 b8 f& }' R7 w
$ @# l/ _/ V, V, ^+ V. B5 U以上为常用的函数！# ~. J+ M7 v! ^7 e
还有很多，如有需要我把资料发到你邮箱里 0 n8 {) j0 P8 v% }2 [
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