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发表于 2012-11-13 08:48:12
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1判断语句- q% b; k8 C6 @' Z5 Q, _5 D
if <condition> then( v- a, f# t2 U9 Z4 r# U
<statement sequence1>;
' M# l' I$ M/ D3 P elseif <condition> then
: m: E2 `8 N9 O; z" G <statement sequence2>;( K( n3 ^" p0 n% O4 k( Q6 F$ _/ w
else 5 ]8 T7 g8 i9 M7 H! l+ i6 B
<statement sequence3>;
; Z$ H- M$ i" e4 Z$ M0 v* W end;
+ A* p J ?7 b P如果分支比较多，用：
' r/ t$ m4 Q8 X' p/ u. i inspect <expression>
" \+ W9 L' @; L. {3 Z8 @ when <constant_list> then( U; F' w2 r1 e# h! T$ P+ S& f3 }
<statement sequence1>;
f% B( W) B: T. H when <constant_list> then/ d x7 b6 L4 l3 l0 f9 z' `' k
<statement sequence2>;8 c1 [( z" o" S- s
..., p, C% U( o; t1 ?7 h, G0 V
else8 [+ ~0 r' @4 g6 y8 e5 K
<statement sequence3>;3 e, v1 ?8 N9 O7 C- C
end;
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2循环语句
/ q" b8 N8 Z8 O9 m3 o (1) from <statement sequence1>0 W4 m( \& O4 ]
until <condition> loop& @2 U" {: K8 Q' u1 w
<statement sequence2>;
1 f+ g- O( m- C8 I' _ L2 s8 y& z end;; g v% t& H: }# k" [9 I/ H# X
(2) while <condition> loop C% P# x) l+ ^2 j6 c
<statement sequence1>;( a6 A6 @( c. E% x- ` y0 [! \
end;, k: I/ z; C& b
(3) repeat
: a6 u J! e# Q2 F/ ] <statement sequence1>;) H5 J. h3 y+ A3 h( A. f
until <condition>;7 ?* a( K. S1 M% Q
(4) for <condition> to <condition> loop
9 ~- j% i( \0 ~6 h- |; _3 p <statement sequence1>;. W: ?4 ?2 _0 ]. ~) j1 r
next;
7 `( p; W3 ]- _* ~/ M) V' D! r! |3中断语句
7 O2 F' y! l0 \7 E% d. L! X waituntil <condition> prio <integer expression>;
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以上为常用的函数！( T& Y a$ W% K5 B/ j, E5 z! w
还有很多，如有需要我把资料发到你邮箱里 6 [& }) J8 U, F: q, U. J# Z
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