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发表于 2012-11-13 08:48:12
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1判断语句3 e# v# u* H9 T* t1 t8 f
if <condition> then( V$ u) L. Z7 H4 J) n0 C/ }
<statement sequence1>;7 e. d" N8 m; o8 K
elseif <condition> then
C) z8 x+ t: _: R8 X" F _ <statement sequence2>;1 I- Q/ Z; Z9 X9 Q
else
) g; `: u8 l; E7 B <statement sequence3>;
9 L9 }/ m4 V7 H- P6 [, y( [* m end;
2 y7 a# Z. w' [ o如果分支比较多，用：
. o6 E$ v0 G: B' e inspect <expression>
, w/ d. f6 c" F3 |' R when <constant_list> then3 R( v6 d( S0 i8 g
<statement sequence1>;
0 [( }3 L4 t2 M when <constant_list> then3 T+ y* X8 i' y: m) x, G
<statement sequence2>;+ D& k# k2 U- g
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else
( c+ {+ `2 T7 s" r( S8 v <statement sequence3>;
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1 ?% q! d6 U. u3 U) K0 N2循环语句
h% ^9 y2 p# ]* ^5 Q$ q9 N (1) from <statement sequence1>& H) H9 Z% K) F$ I Y$ B
until <condition> loop+ {; @2 k. x0 W8 n
<statement sequence2>;
6 k1 D2 o' h2 d3 y( @5 C$ K end;
+ ^% T3 K6 V; F& W# q/ }/ [ (2) while <condition> loop
1 A9 X5 h2 |) v" j" `6 K7 b <statement sequence1>;8 S% \8 t; U3 E3 b* V# ?
end;
/ {$ E$ o6 ^ m3 n# F" ~" |* J (3) repeat
" v' D' `8 a3 u# v! E1 Q% H <statement sequence1>;/ }! [8 u$ d* O3 v% ~, P# D7 V
until <condition>;" A% V0 R+ J5 a# `
(4) for <condition> to <condition> loop
$ m. Z5 G7 `+ X* E4 E C, f4 I% [ <statement sequence1>;% m& g$ d* [6 T, X5 o
next;
9 W' ~1 }1 P$ o4 a. \3中断语句6 N4 Y# ~* }8 }0 I+ V! B4 X
waituntil <condition> prio <integer expression>;9 c4 J5 k1 x1 w. f9 k
! _ j* y7 s( ], W& B
" J2 W/ s& f2 L# y" {
以上为常用的函数！
$ f" F6 E5 W$ h3 a- Z还有很多，如有需要我把资料发到你邮箱里 5 }' Y- E$ }- q s
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