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发表于 2012-11-13 08:48:12
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1判断语句
" d6 Z" ^7 d4 Y9 m if <condition> then
^- F4 \+ p' u, W) u; a. M: Q0 ] <statement sequence1>;
+ I/ R7 U% N4 h7 G8 x; x elseif <condition> then2 J$ F7 R O( I. @% W0 {6 h
<statement sequence2>;, ?9 u- O8 _+ m: {
else 0 B- u, D9 J2 P1 y1 T# \! J
<statement sequence3>;
# f1 I2 }. ^3 t" g- M end;3 [9 }4 j r3 v
如果分支比较多，用：
4 w& T( d& i; U& U+ t inspect <expression>
; H, S: v2 Y9 f1 B) F- u; s when <constant_list> then3 Q8 @. u0 r' Q1 W% X
<statement sequence1>;& O& q/ l8 q* w, s- l* l
when <constant_list> then3 m% {' [1 I* i8 y$ G% ]
<statement sequence2>;
3 }1 E( I3 _9 Z# ^+ n* x; G ...
2 _% N2 r9 p( u# M$ }$ `( } else
4 l' }7 w5 z$ Y9 X2 n3 ~( y <statement sequence3>;" _) i/ U# S( y* }
end;7 Y' }1 T# q2 I |) W4 k* f0 q2 Q- h
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2循环语句7 ~! R0 X# ?2 U" w; @ Q8 u
(1) from <statement sequence1>
8 o$ l7 C( w$ _- w7 G until <condition> loop
0 h. s m/ a% K8 q9 h. i <statement sequence2>;( g5 I* [% P2 k3 b2 D6 D- @
end;
7 s2 Y- i4 y9 b) Y- U/ p" P (2) while <condition> loop
. i0 l# F$ }6 x/ N% z <statement sequence1>;( a+ g# J; D0 d+ M4 P, A3 O- K
end;
6 O/ p! z" o- I- V" \" U (3) repeat $ q# o. \5 P5 ]. c; u' y
<statement sequence1>;! ^, V2 S- a, D/ ^+ L& x1 _' J
until <condition>;
% }" [0 F: n: z (4) for <condition> to <condition> loop; J2 @* D: S- L/ u6 J* t
<statement sequence1>;
+ I0 t! ]) o3 j+ d, W6 t next;
/ n, \! N8 I* w+ a) c3中断语句
. L3 k/ m0 g$ z5 ` waituntil <condition> prio <integer expression>;
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% \- _1 k; E1 X
9 v, ^7 |. c4 N9 I. I( A以上为常用的函数！6 p5 {- ]- \# i/ y9 v
还有很多，如有需要我把资料发到你邮箱里 . t7 e& q* i6 n7 H2 {% l
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