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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
- _2 [, d# [: Z3 Z/ j# h: g if <condition> then
6 G! u1 T; z: P9 S$ M <statement sequence1>;
w# u: M5 G- Z6 h6 h0 b, v elseif <condition> then
- O: ]# H ~- c5 Z <statement sequence2>;8 I8 j+ h+ C- j
else
% ~0 a+ l6 \" A* e a! P" S <statement sequence3>;9 ^- Y9 d! b& e! l
end;: Y$ Y$ U- H2 e" U# f- ~
如果分支比较多，用：
$ s/ W! ~ e9 J: o$ j& K inspect <expression>. K) ?: P' k. E
when <constant_list> then( I5 T$ ]) f( w' t6 f
<statement sequence1>;2 z5 \1 w3 E# ~$ G
when <constant_list> then8 L& ]3 v* C { f S K% \' \3 R
<statement sequence2>;# R; R, E6 u9 T1 v- Z2 V3 g
...: F0 }4 Y- T( b5 m$ W1 U3 `6 C8 x
else/ o. r7 G" Q' R! ^( K
<statement sequence3>;& R* b. ^( H; c7 e8 M
end;3 l' T% N o& O
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2循环语句
( y- q) l8 b7 r2 c (1) from <statement sequence1>
: [" D# ]. u3 R8 p# l. c5 N. R until <condition> loop; V; f' ]' E4 Q; {, n
<statement sequence2>;+ ]" ?; A4 [! ]6 M- r2 W
end;
4 b* ?7 E2 V" Q! j; d2 V (2) while <condition> loop
1 c& t9 z% R3 V0 K2 N <statement sequence1>;9 l- A8 J0 J# A1 L# B+ x
end;6 G. J6 O j1 H% F: F' [
(3) repeat
& g( w- i& s- N8 w2 X/ y6 R* ] <statement sequence1>;5 }8 B0 H! w! x# _) q4 Z1 H
until <condition>;, L# V3 D% i9 c+ W X& U
(4) for <condition> to <condition> loop
2 y2 H# K6 D7 `7 G- [. }. N <statement sequence1>;( G: X6 L! G+ w0 I6 ?
next; P7 @1 I0 c7 G- M1 g: f
3中断语句
& B% s. @1 c$ w! Y waituntil <condition> prio <integer expression>;+ O) j! ^: `8 `
1 q3 M8 B# ?* N5 y( v
! C2 K' S* S h以上为常用的函数！ l5 d! X ]% ^6 E
还有很多，如有需要我把资料发到你邮箱里 1 |' J8 S$ u/ {- [$ p/ I
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