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发表于 2012-11-13 08:48:12
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1判断语句 z9 [8 Y. Z; k0 c3 O3 m; t
if <condition> then
" r, `; _# N* r) E! ?/ \: @! ~, E. c <statement sequence1>;
4 K" j, W" T3 D# q elseif <condition> then* u! {8 W. X. p
<statement sequence2>;
! C9 V# e0 B/ a: `# E6 R else
9 m4 R. D# d# T2 M <statement sequence3>;
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如果分支比较多，用：
- O+ m' o5 J- a1 O, F inspect <expression>
# r' H, c6 `" F+ V when <constant_list> then% ~- L' \1 \5 b
<statement sequence1>;3 h4 {4 |2 O4 z3 h+ @
when <constant_list> then
' U+ i: ]/ j& k$ r <statement sequence2>;
/ U/ T* {+ m. M' f0 e, W# R: u ...
: V1 _: D" j: f2 r else, |) B% B$ N# k+ i& |! ]8 s
<statement sequence3>;
3 i+ u3 q6 j* d: V: Bend;
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/ C, p# x1 D& @1 [' H2 [, M: B2循环语句8 x; S% ~+ S) V$ n, p% `4 i
(1) from <statement sequence1>2 @$ X5 Q, W6 V+ R6 R$ j& ?
until <condition> loop
! P/ Z q6 E" M. J3 `8 ?9 j% ? <statement sequence2>;+ E+ g% z$ a: R) c4 t
end;
! u$ A/ C5 O9 Z L. @7 y2 E (2) while <condition> loop# Z, T6 A4 Z1 Q: L. A N5 j/ T
<statement sequence1>;
# t" K3 E) |' l/ N end;3 k0 u0 f+ W9 k* l6 I" h& V
(3) repeat 7 {1 f9 l) U2 F$ T# h
<statement sequence1>;
0 Z* z# T2 o3 H1 Y& t. a until <condition>;5 p! I1 [/ h* T- V8 Q
(4) for <condition> to <condition> loop5 q+ k) d# K, T- b, Q8 l& n
<statement sequence1>;8 M( |9 W2 ` c! l, p
next;
( u7 s6 r* i/ Z, z3中断语句/ q! W" p, E1 V) T. `
waituntil <condition> prio <integer expression>; ~1 [" T* H" [! `
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4 z3 W0 N4 I% t6 V, h8 \0 D以上为常用的函数！
- S4 ]) Q+ V# ?5 v# n( f2 N还有很多，如有需要我把资料发到你邮箱里 1 o' r! S! b1 A) P8 L$ Y" E+ _% D
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