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发表于 2012-11-13 08:48:12
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1判断语句
' Y6 W) V% Z- e, m( H' } if <condition> then; n$ ?7 l H1 N x3 r. p. Y
<statement sequence1>;
% [9 r- h+ ?" P! ~' @! @& g elseif <condition> then! Y7 \4 u: Q3 i2 e [* D! Z
<statement sequence2>;
! \: z4 `+ B- c else
6 C0 `! Q1 F, G" G8 U: n8 E <statement sequence3>;
4 N' r5 B$ H2 N8 o6 a' I6 Q: | end;
U# Q0 K0 T e& G. [6 T如果分支比较多，用：
$ l: k* ^2 t {, G. U% _ inspect <expression>
' l5 Q+ _* W" W$ ]* \- u+ B when <constant_list> then6 ]" W4 k/ r( y; V/ N
<statement sequence1>;
8 P" v, w4 D* o/ n/ D- p2 B when <constant_list> then
+ N. R; n+ ?* h T t <statement sequence2>;
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else0 b3 N& X! q0 k
<statement sequence3>;$ n2 I. ?0 F* U$ h# I. P! T/ i
end;) S) A4 c: ?- ^- E \0 Q
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2循环语句
5 c0 V: ]8 a( Q9 R$ T (1) from <statement sequence1>2 }6 ?( [3 G4 X" x& J
until <condition> loop
! N' F% I0 n" [( U4 }9 |% M- \ <statement sequence2>;
4 o) G% |2 g/ {3 C. _$ w end; l: ]% Y( Z8 c) Z
(2) while <condition> loop
. ?7 t; w# l* P <statement sequence1>;6 a8 s# k- G: S
end;
, K2 X' x4 K, u9 O' D (3) repeat . y' H( w2 y; f$ M3 H; k# x
<statement sequence1>;
6 ^7 ], S& x$ Q' F( X* r( D4 g until <condition>;
6 T# Z- [2 w6 H( `% F8 F( x$ P9 x (4) for <condition> to <condition> loop
- F t3 o2 V3 ]) X: H1 i <statement sequence1>;9 Q F6 v! l c# ]
next;, W/ ?% I1 H6 t; ~
3中断语句$ ~4 w2 z, F- T) A' M
waituntil <condition> prio <integer expression>;0 d z6 J* ^9 ~$ z" A
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i6 r7 }" R; `% h0 w% A+ r
以上为常用的函数！
9 J8 Y$ P7 Z, }8 d8 m: c还有很多，如有需要我把资料发到你邮箱里 7 B v; z. }% {8 a( j
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