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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句. N3 b0 _% c" y! i# W( L* R
if <condition> then. }; D# J0 o: l( V4 E: Z
<statement sequence1>;
" ~0 A* B8 u; `: g elseif <condition> then' K: o, J7 {5 r9 S9 P O% O( e
<statement sequence2>;$ l$ a4 s/ z# l2 g
else 6 Q% o9 |5 M6 ?- o( K; y3 U
<statement sequence3>;
( U/ N- E+ t1 m) R( j& ^" a0 @ end;
- k4 L6 _& c+ w8 ^* n' ^如果分支比较多，用：
! |6 J T2 Q4 f inspect <expression>
) ~$ u; I r1 r0 t) p. y when <constant_list> then
/ H& G- T, V" b/ A <statement sequence1>;; W V/ k2 K) w0 q6 v
when <constant_list> then2 c8 ?. c* k$ ~- w
<statement sequence2>;0 }& t3 F! h# N# \
...
5 a) v7 L' \1 U$ b3 m else( \/ B0 W7 q4 K* Q! I! i
<statement sequence3>;
; O8 O% `; U7 n# eend;4 Y$ u* c" c: L$ C- i8 W/ a4 N$ r
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2循环语句
; k S% }$ x% t! s4 j (1) from <statement sequence1>/ b. P# @* f0 C
until <condition> loop5 m8 [( e& V" M* J
<statement sequence2>;
" K+ J5 P& a3 i6 c, s end;
7 i |& t" F- l# F (2) while <condition> loop
% M6 G' U6 B$ s3 ^9 w <statement sequence1>;
( Z! W9 e/ W* y5 l, R end;: J. {. b' D, @. p$ p
(3) repeat
& q0 |# K E; U# S! x <statement sequence1>;
. \7 D- b' T" u- Q# F, W until <condition>;. G8 j, D: Q8 l
(4) for <condition> to <condition> loop
- u% V# J$ a+ Y1 ^ <statement sequence1>;
8 k, J) y' U8 c% ~* u$ O! O next;
* f. V3 j! d7 p3 {3中断语句
3 ^: c# b4 h* Y4 { waituntil <condition> prio <integer expression>;
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以上为常用的函数！* s: Q& Q3 c4 C) q+ y3 S
还有很多，如有需要我把资料发到你邮箱里
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