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发表于 2012-11-13 08:48:12
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1判断语句8 |3 D, G: x! m m& t2 `
if <condition> then! v4 D% @. o5 h, f- l
<statement sequence1>;
" L. D1 x$ E2 C elseif <condition> then
0 C- @) W9 v- n <statement sequence2>;
! m% s G* _8 H0 l else
( Y! J+ ^. c- ~ <statement sequence3>;. U% V' @' O1 W1 ~; U
end;# U& R3 @0 s4 t1 s) W
如果分支比较多，用：; R; u7 z/ g0 ?( \3 j* n9 A
inspect <expression>( N- y0 c- L' b
when <constant_list> then
. ]2 f- M# R5 N# I, N <statement sequence1>;/ o( C3 Y0 }% ^2 i9 L" t
when <constant_list> then$ }+ |8 H5 W3 @8 j# \
<statement sequence2>;1 c+ Z% b5 l% R8 s$ g+ J9 F
...
$ `4 m3 B8 V) z5 n else
3 _6 [7 J; c7 I* ?, J A! u$ s <statement sequence3>;& W! c p) \+ B0 ^0 y8 |; B& `
end;
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y5 j- u+ e5 O/ n" l6 Y5 A; i* h2循环语句0 g1 j+ G" z" L1 r6 }9 e
(1) from <statement sequence1>
7 v( g1 K/ _" c1 F+ `4 _ until <condition> loop
# i+ G/ I& ?. n* a8 U <statement sequence2>;
/ W. Q: b" [% x4 q5 _& M end;& n2 A) l1 b( r
(2) while <condition> loop" I* c8 O; T) V8 q, }) N
<statement sequence1>;
' w% v! O1 u5 F8 X# f& R! I end;1 m* P9 ]; ]3 y% y+ K$ }3 T0 y8 T
(3) repeat : M* x0 r' Q9 D+ y$ c. D8 F
<statement sequence1>;
1 g7 j: g) J: u7 O% t until <condition>;
/ r6 W( F$ L: e1 I. ~ (4) for <condition> to <condition> loop
" @% q; V7 r+ x- K <statement sequence1>;+ r9 J* W, M, i" S, Z G, E7 m
next;) a8 a! _- s, J1 l* q3 c
3中断语句 k3 `9 {% m' M
waituntil <condition> prio <integer expression>;; h z% p/ ?& N' [
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以上为常用的函数！' E% M3 C9 P; N( j3 q
还有很多，如有需要我把资料发到你邮箱里 5 k6 U4 J2 ?- M
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