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发表于 2012-11-13 08:48:12
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1判断语句
, S7 g2 R$ n5 ?+ S; M if <condition> then
. Y( D0 D$ r5 a! P# c <statement sequence1>; q2 s$ F! j$ j* D5 m* s
elseif <condition> then
; a- C5 E0 K( v <statement sequence2>;
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<statement sequence3>;; R7 L- v* q* A3 Y9 A
end;7 [9 G8 L+ T/ y9 I" I
如果分支比较多，用：
" Y$ ]7 y5 u9 a; k5 J inspect <expression>+ r3 j" x& i& U8 p
when <constant_list> then) M$ G6 {- j1 U
<statement sequence1>;! M% n0 Y. _, S
when <constant_list> then$ @+ R3 u) }, K3 G u- M
<statement sequence2>;
3 C- q" }/ ]' U; V M ...
2 Q" j4 g# t0 l/ @) C F else
/ X# x3 V- L5 k8 I4 g8 r; m <statement sequence3>;
) b; N; a+ e7 U. ~. h. F4 ~! o% mend; X" v% w$ V, L, ?; T' B& r
! y6 s! w( l( S' r2循环语句8 q- f. Q5 i! `+ c& r, i( i
(1) from <statement sequence1>
7 Q5 l. Z" @) I1 W7 v" F until <condition> loop* C2 T" B0 P* z& i' R1 ^
<statement sequence2>;+ d" `( V& M+ E+ s" |9 Y
end;
) X, f- Q9 s( v' f# ?% p; s (2) while <condition> loop
" c7 H! z7 s/ h( Q* ] <statement sequence1>;1 S @) `* Y' d" B
end;
' T& g* \1 }" o' I (3) repeat % f7 g# D( F" L9 U3 Q: ~: M
<statement sequence1>;
' ]4 ?. M& _1 d7 ]' L8 m until <condition>;
O' `+ p% g9 \! g! I (4) for <condition> to <condition> loop P/ K) @& `3 R9 J8 X) }6 H
<statement sequence1>;% C n8 I2 R, @. |
next;
) W$ v. e$ D3 {' o9 l' M0 c# E3中断语句4 H( z7 \# |+ M
waituntil <condition> prio <integer expression>;
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以上为常用的函数！
9 g+ q1 ^+ b& w1 q还有很多，如有需要我把资料发到你邮箱里 0 P$ k$ W# @" e1 u
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