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发表于 2012-11-13 08:48:12
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1判断语句
& g& R& X8 A5 N* D* U if <condition> then$ e* C3 q1 a4 n# C1 w
<statement sequence1>;
4 ?4 u- R1 m' v q: f% H) w: _" [3 g elseif <condition> then+ t8 k3 t# V3 H k8 a; A0 k! N! x
<statement sequence2>;
3 ]9 j1 Z( S# W" G7 ^0 I else
% s( ?, G% x( j+ ? <statement sequence3>;
1 [8 m6 G5 r. t( G) r6 Z end;
! ^6 K8 X; ~" k% k2 t) Y$ x5 C+ ?1 x如果分支比较多，用：1 V& R: g# \! I' _ H
inspect <expression>
) M0 d+ `' X X* U when <constant_list> then
1 x+ ]; F- [6 i q: J( V <statement sequence1>;/ T: c9 z3 ]! Q3 b5 L
when <constant_list> then J7 Z9 q) _+ o
<statement sequence2>;
3 [0 X$ L3 \2 \- R ...
; O7 G F B2 m0 k. h7 E, d else
4 R) Z2 h. }- s+ C <statement sequence3>;- g. L' _! \1 @; c, B6 u/ w, Y
end;& p1 c. X- }% H
3 D9 y/ I$ \: Q/ _ m# D; \2循环语句
* O7 [2 j& V: U+ M& K% D' I2 N (1) from <statement sequence1>+ `5 z2 w3 k4 ]& q
until <condition> loop
9 ^* i R& w: X- m- j0 O6 I/ S0 C <statement sequence2>;
' C* ^4 b& Y. v" f( C end;) ~# t+ K* Y# x# E* Y& _
(2) while <condition> loop
z6 _4 j- H3 L f- i1 } <statement sequence1>;
: e/ I: w P. G3 [: |4 n0 e& A end;4 y! n6 Z/ G5 x- c1 L
(3) repeat
+ N' `2 }6 i- ` <statement sequence1>;) S2 H, S5 `: I5 f" W
until <condition>;
' L3 p) d( \! g) B6 j$ @5 A: i G (4) for <condition> to <condition> loop( V j+ U& E) e* V) i# s2 r {' d
<statement sequence1>;
0 r1 ]5 i4 Y. t& x- [ R next;* E) ^5 F5 K. ?: t# q1 Y% ^" V
3中断语句7 R+ j! j+ O; D8 l
waituntil <condition> prio <integer expression>;
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2 K5 t3 _2 _( Q) e4 J以上为常用的函数！
) w+ f" d7 R$ p9 C! i还有很多，如有需要我把资料发到你邮箱里 ' z! g! n; m* ?* ^1 J
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