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发表于 2012-11-13 08:48:12
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1判断语句
; {" h' Y3 r' C if <condition> then
1 R" k9 S9 b! B <statement sequence1>;& Q2 _& b2 W+ i# k6 B: l% U
elseif <condition> then- V3 W1 F4 H% `$ V' f0 N
<statement sequence2>;
. `7 p( i8 M7 ^/ j/ J7 R else
) |' {/ I- Q5 M( a8 i <statement sequence3>;* f) J6 [( z/ ]& M8 r& O
end;
6 g" I3 y- Z1 A8 l如果分支比较多，用：
& z# a2 `4 m: A/ c inspect <expression>
0 D/ m; S# n- l& P; e8 f' n when <constant_list> then) J8 ]4 u* a; n! _8 Y0 t1 N$ ]8 z
<statement sequence1>;" E* }3 u0 c$ [2 K/ l& [8 ^; g
when <constant_list> then
- C& ~+ l$ f; ]. J1 ^ <statement sequence2>;
3 w; O: d5 g/ z6 L ...
5 l5 g, a9 E; B8 ^* k else
1 s. g2 V: a( }! `$ \7 n' g <statement sequence3>;
' _; m/ K N4 [end;
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2循环语句# e' x1 Q% X. m' M
(1) from <statement sequence1>+ c% m6 T" @5 `: f' w
until <condition> loop
' o' N0 [7 r& E k4 E2 f <statement sequence2>;
$ W0 {- U5 F, R end;6 v, a% y8 Y& Z T f
(2) while <condition> loop
# R7 c- o& z$ A6 q <statement sequence1>;
y" d Q; q$ k6 }8 y end;
9 h5 x% L3 E, D! l (3) repeat
7 f; W4 Q& Q, C3 X& @- B <statement sequence1>;
% j6 p5 T1 { L4 V until <condition>;" L) {0 V/ }& l2 H
(4) for <condition> to <condition> loop% R* f$ m/ R. w P0 s9 y! U
<statement sequence1>;0 B9 p' {7 t7 o) e9 E
next;
- z$ Z2 J/ i$ a" ?- n: Q' e3中断语句1 f: y% d; e& d
waituntil <condition> prio <integer expression>;
# `1 f5 e; a4 O% S/ i( R2 F/ Q" {; p
( p, o$ n$ f2 T- ?* x以上为常用的函数！
' X# A: P/ _& b6 P* l5 g还有很多，如有需要我把资料发到你邮箱里
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