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发表于 2012-11-13 08:48:12
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1判断语句
6 i# K$ a( f. j3 ? if <condition> then
8 j! o h2 D0 V# Y1 h <statement sequence1>;
) W) j9 k5 t( j' \1 b6 x elseif <condition> then( y a+ [# F, v6 T
<statement sequence2>;
8 E: Q6 ~! H3 [: Q' p% U( E2 h else 7 T8 `, j4 x# m
<statement sequence3>;
. [- X& u' Q$ x; \& A9 i, b end;
3 P. h, v4 ~4 R如果分支比较多，用：
% P2 ~- ~+ m c$ h2 }. N inspect <expression>
7 X8 A9 r' b. k! r O! e% S% o% P when <constant_list> then
' \! M4 e6 v, q/ O <statement sequence1>;; c7 X, R' S2 x: ^
when <constant_list> then
3 `9 }& Q/ t3 _. l <statement sequence2>;
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else
' F+ M6 V5 D; @: s$ M <statement sequence3>;# G: N" C3 ] P0 x
end;
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2循环语句
4 B7 P* ^# X) W; h. ] (1) from <statement sequence1>
, Q0 ^1 y; V& T until <condition> loop
& ~+ V5 u' A! f9 F1 K" v. t <statement sequence2>;
. Z* m; v& o$ h6 a2 X end;
2 L* o& i V( M7 Y' c9 B (2) while <condition> loop
B7 R6 y: o6 S% ^0 R+ n8 A; Y5 A <statement sequence1>;. _' s( M1 G6 U5 @$ a5 Q( a& r5 ]1 |
end;/ `/ C$ F6 _8 `( G' `2 H% t
(3) repeat . w: W8 ?- n+ R) ^ {
<statement sequence1>;
( ]1 N, C0 w% r% x6 i' K$ h until <condition>;8 q$ Q7 D! I/ s s# X0 S/ a
(4) for <condition> to <condition> loop
7 R. X8 j& c1 ?# R7 |, c0 d <statement sequence1>;$ Z5 _8 \8 }2 f. K2 k7 }
next;
7 I# {2 a9 o; F9 v3中断语句- z7 z- {! i0 s) W4 T* }5 `. }
waituntil <condition> prio <integer expression>;8 L3 n3 Z' U. F; w% D4 X
& d% _' Y! {1 o* U
, J; O. G5 v! J以上为常用的函数！
! G& o' Y {4 \: U! Q- H还有很多，如有需要我把资料发到你邮箱里 $ y5 Q( ?* G3 w# h2 o8 h
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