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发表于 2012-11-13 08:48:12
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1判断语句
. Z0 F8 T4 P' }1 |& Y3 X if <condition> then/ M4 U/ \/ n- L
<statement sequence1>;8 Z9 @# ?" `! e6 h
elseif <condition> then2 y% ~% I2 `: L6 h
<statement sequence2>;
/ q: e6 l4 m+ A( s% a8 a, [1 b else
7 D r* s3 T( P$ S <statement sequence3>;1 x% M5 U% E" b5 D
end;2 J3 ]8 O6 ?4 F8 K6 j
如果分支比较多，用：
" s; {) `. ?& |1 v" R; @ inspect <expression>
& w" Y' V" c# Y( M l6 e! F1 p when <constant_list> then
1 m$ R- M; h- }$ i <statement sequence1>;
) k1 J& V6 l' V when <constant_list> then
! B0 m; L0 Y, i* f0 T4 c <statement sequence2>;
5 j+ j) X0 ]0 e2 P% ~ ...
7 g, B- p' q9 q* f' o else
6 J& S# Y5 s4 j* m6 i0 ]6 w <statement sequence3>;
' A! h$ ^6 ]: C6 q( d6 h. cend;' G5 T6 t0 X' }! n8 U
" T7 b: k7 I% u& |+ C1 p0 g/ M2循环语句; j" Z( L p" c: l1 G7 O
(1) from <statement sequence1>
+ i0 S/ w# R9 q8 x until <condition> loop
* N6 _! o' `5 O% A: ^% \" `, i% M <statement sequence2>;: k& e5 n3 Z) s
end;
* v8 W% o/ b# l% x4 ^ (2) while <condition> loop
- r( K4 z: e% V- I$ K. ^& C <statement sequence1>;. [2 b7 O( x2 _$ `. @4 W. v& c
end;1 q; P( o2 ]* o
(3) repeat
: X2 w: w0 J3 E <statement sequence1>;( h$ A7 S" |9 Y. {
until <condition>;
4 k* N5 s# J; n+ u8 M; T (4) for <condition> to <condition> loop" D: H; S! S$ e3 p: P! ^4 u
<statement sequence1>;. c: m, g# a' k( \! I; r) _! l
next;
6 f% \7 S. w* A6 J+ n S3中断语句
4 [& h! O5 U6 x# f& K7 Z waituntil <condition> prio <integer expression>;
& P0 V1 U8 X+ k+ G6 D; D! V8 E w0 H* x% \- N2 o* ^
! }5 [% ]7 `9 t6 @8 Z4 o6 b" W
以上为常用的函数！
- E9 r! g6 n M# s4 r+ l: }还有很多，如有需要我把资料发到你邮箱里 + X& |5 X( O: ^
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