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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. f$ w, i. j. \4 c
if <condition> then) H* D, v0 L( H+ H, y' s6 e; T P
<statement sequence1>;. j/ F, R2 K5 P
elseif <condition> then
1 p) L: O& c! y; w <statement sequence2>;2 M, E u# j1 F! ]2 D7 v
else 0 D9 ^. T, I9 ?8 ^, r0 g) N2 o
<statement sequence3>;
: r( ?- e6 q& m& R; H4 i end;" ]3 F4 n4 G# f3 o M
如果分支比较多，用：
# }" j6 C: h: P" Y" d0 ~9 m inspect <expression>
; j( X; u, M3 i9 j4 G- x! i1 N when <constant_list> then
, q% p6 v3 u$ A2 `2 @ <statement sequence1>;' g' x U& | z8 c* }4 ? [- Z" H
when <constant_list> then
2 _ J4 A' B* S9 q! @- L! L <statement sequence2>;
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else
/ x3 C" P0 F! d+ ]' I& t9 h) o$ Z <statement sequence3>;: O2 \& ~) \4 b2 b& |
end;
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2循环语句
( ? d+ M1 H" Q9 g0 M+ L" k (1) from <statement sequence1>
! Z8 X) ]% H7 o t0 L until <condition> loop
4 W( t0 `+ R! s" r. t <statement sequence2>;
8 a2 x' P/ }$ E1 j/ P I) k end;4 N/ l0 C4 R, M
(2) while <condition> loop3 P& y/ R e! [; i' n, z8 ]+ c
<statement sequence1>;
% ^5 {6 t2 l$ C! a end;2 d. N9 c6 F2 P& Z- ]
(3) repeat
* @- s! Q7 z9 u' b+ c <statement sequence1>;, \0 g. Y. Y4 @* t6 ~3 u
until <condition>;- K6 Y+ z+ a3 W" e
(4) for <condition> to <condition> loop( `9 e: Y5 G' R) S7 H( h* ~ x
<statement sequence1>;/ _4 R. H* l2 v! x) n7 i) E" @, H
next;
3 U" ` m4 a" {3中断语句
/ l. g6 M2 S4 _2 u3 X. o waituntil <condition> prio <integer expression>;5 h t- T4 ~+ T: T8 q5 E' O0 e7 y* m! c
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8 q, B2 Y( i- @3 Z: O+ B& I以上为常用的函数！* |( @- M: |" J3 i
还有很多，如有需要我把资料发到你邮箱里 + K6 C+ c3 j3 _: e9 F6 }
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