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发表于 2012-11-13 08:48:12
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1判断语句) F* x; S' ~* v- _& Z
if <condition> then, j7 U% s3 m8 U+ g+ U
<statement sequence1>; H" Y5 X8 G; |3 ]: b9 X; C- J5 Q, P
elseif <condition> then
_4 d7 u; J- q: a7 F <statement sequence2>;. m% ?" F6 h$ V+ [: b; N) J
else
# t+ m* E3 x) F' w <statement sequence3>;
. ^' m) e H/ d6 E9 _$ u8 p end;
! P/ S1 `* b* f2 O4 y如果分支比较多，用：
" t2 ?% X& D, P& v$ }+ i inspect <expression>
* \8 x+ m1 L# V( P/ P/ O% w+ T when <constant_list> then
% D0 E% v# P! P% c7 t0 j0 l0 ? <statement sequence1>;
9 d4 `: L1 ]' b+ u when <constant_list> then
% P. u7 F) I9 Q# o <statement sequence2>;4 Q$ V# Y1 I( ?1 o# Q# g
...
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<statement sequence3>;
" q! a, m; A9 j+ E! G7 s4 Aend;7 f5 v$ F1 f# s% {
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2循环语句
4 q1 x) V9 Z' s9 Q: f2 W: Q (1) from <statement sequence1>
# o' z8 P4 ?' K until <condition> loop
0 ?$ D% P; C+ Q2 w7 U$ u; F7 D <statement sequence2>;- B% o& `4 t6 w; e9 P2 q
end;
& E! j* s1 q( X( D. M; l. x (2) while <condition> loop
0 I; Q: q' n+ p. Z: _ <statement sequence1>;
9 k; j. y! L- U9 n' g- P end;# Q9 z# h& }/ q! u
(3) repeat 3 c! N( a& r4 W- }# G5 L
<statement sequence1>;
9 c0 p3 N6 X$ u t9 M; c% a/ p4 _$ _ until <condition>;
7 P: k" y- V' x+ k2 L K (4) for <condition> to <condition> loop
. X A8 j" @' Y. B <statement sequence1>;+ w; C+ u6 a) e3 D$ ?
next;; @. A' Y5 W2 X, N; s+ ?
3中断语句
6 }; X! V3 }( h* r2 @6 j% W waituntil <condition> prio <integer expression>;# L9 B! @- z6 _% ?
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# c6 w, P+ W, I! D, ]
以上为常用的函数！
( t! E% [- r6 z1 p还有很多，如有需要我把资料发到你邮箱里 9 d: C$ J8 s, \$ K5 y7 |7 h
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