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发表于 2012-11-13 08:48:12
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1判断语句0 L# M9 q v R P# H* F
if <condition> then4 |- {7 R' f) i1 w' c9 N
<statement sequence1>;
% y* S8 Q; Q. {- I, J' W2 S& M elseif <condition> then9 q& A3 X5 f' p! d0 k
<statement sequence2>;0 k5 ]9 O/ t: j
else
/ i9 u& Y3 }& R k1 i <statement sequence3>;% z+ k+ x2 Y- M& p+ N+ ^2 N
end;3 f% }0 e, p% p; |
如果分支比较多，用：
5 f/ D2 k7 }, Z3 l7 G; W inspect <expression>2 ]6 O- x' @+ h
when <constant_list> then
; T7 C7 }3 D) S* R) F: L <statement sequence1>;
, x# g3 U' w) F5 |5 O when <constant_list> then
% [( E7 @6 h! e: @0 h <statement sequence2>;
4 M4 b3 Z6 L( r8 _ ...
* X8 r. X% c! m else) Y1 @# Z! a) Z8 W! I+ H
<statement sequence3>;
, i# \- F. x' }( Wend;
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2循环语句
& p+ ~( }* r2 r1 @3 \5 ]/ \ (1) from <statement sequence1>- u7 i# ]9 P, u" h
until <condition> loop0 Z1 l6 i; J# @
<statement sequence2>;
) d3 i: p, b$ d8 Q' S. G9 Z end;
4 p9 n8 h' C$ O8 }' K' I, y$ s6 h (2) while <condition> loop
" E1 ^$ x# x. n( ` <statement sequence1>;
2 O, I& O$ F/ h$ h! J5 }4 E6 _# q! r end;( V% w+ \5 z( h. ?# [' t9 i' A
(3) repeat * L1 t' H" l. q- z
<statement sequence1>;
- {. n* s" p' {" p0 l until <condition>;
8 P; w: |% p' j# i* V3 }( x" f0 ] (4) for <condition> to <condition> loop
9 j. o& j5 Z" G, J7 e% s# y <statement sequence1>;+ i' R/ | o) F9 i- Z8 k( V
next;% z g) v8 ?, C0 @6 i) G
3中断语句
; [, h1 x# K0 b: _8 H& Z5 K waituntil <condition> prio <integer expression>;3 i/ ?5 ]" [0 ^0 Q
1 ^4 ?& D6 ^& s4 F' x
4 P# G6 c( H9 N1 O, d2 H! a# |7 V以上为常用的函数！
) o7 |2 o. d( ^6 I9 t3 E# S还有很多，如有需要我把资料发到你邮箱里 6 M2 m* e% j- }0 z; o# S* m
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