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发表于 2012-11-13 08:48:12
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1判断语句+ \+ ]3 \' r8 c$ e7 L( P
if <condition> then2 E/ S' o. K s$ w) _! Y8 r9 M
<statement sequence1>;
: Z$ I) z; M' e& H, f elseif <condition> then9 p$ k4 k7 z8 l6 J6 | U$ u9 X
<statement sequence2>;" e3 @+ B1 V$ g3 G
else
3 b) y6 ?2 n+ @' z <statement sequence3>;0 ]1 j( Q! n1 R7 i, F" H
end;
' Q5 V, U0 ]6 ~; ]+ I: ?5 z4 g* ?如果分支比较多，用：
3 n9 D* }4 S8 c$ r7 ]; |1 j) V- n inspect <expression>% R9 y. t+ Y6 H3 M3 ^
when <constant_list> then
! Q. e# c8 E; o3 k7 c* u b <statement sequence1>;
2 q3 C7 q4 b( n, V" Z6 _6 _ when <constant_list> then
) ? M* B3 S' y <statement sequence2>;' L9 a' O$ s& h/ i( W7 S- F
...9 h2 k: ]/ x F5 m/ s8 Z
else
. E0 [ t; p0 P! _ <statement sequence3>;
; V2 L3 J/ j. f) I) K5 A- gend;5 \. D' l: l( U6 ~3 t- o
; m* x8 o; a: e+ ?2循环语句5 F, Y, u" E# J# X
(1) from <statement sequence1>
1 D) [; F9 g! G( O3 r4 t until <condition> loop7 u( O5 }. S7 V% \$ o7 ~
<statement sequence2>;
0 y! n& P9 _* e4 `6 F8 Y; G9 ~ end;- H8 N% x# X; [' K
(2) while <condition> loop/ Y' ^4 h+ d7 G* d8 y/ S& k
<statement sequence1>;" H- p; S3 o- B9 x
end;
6 x; g. |& g a# L' l (3) repeat
$ X& ]7 o. C# ]* c, g9 n <statement sequence1>;% c) }' F6 D/ p) a- @9 `" g
until <condition>;5 S s* M, O9 {$ B m8 i! P
(4) for <condition> to <condition> loop
# C1 ^# Z/ t; P+ c* l+ ? G <statement sequence1>;
! G9 _- H$ M* ~( A7 ^3 y+ w- q M% A next; L, y' V# F8 K n3 Z4 s
3中断语句
8 | B0 |9 u/ U) x" x waituntil <condition> prio <integer expression>;
3 y4 P3 ^. q: R& D/ r" O2 ~2 }( a$ ]- v0 @# h* N$ P2 |
: H5 n& K# P; k
以上为常用的函数！
$ }* Q* Z) d9 ^2 j" _$ g还有很多，如有需要我把资料发到你邮箱里 ) Q) ]5 v- N+ z$ H: e' b! A
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