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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1 t- j1 [9 Q+ R
if <condition> then Q1 N9 l, v9 {- d. M
<statement sequence1>;, v5 }& d, Z7 g; P6 U
elseif <condition> then7 |5 @: R9 ^4 k2 v% T
<statement sequence2>;
. Q8 S6 t% x L/ u( H, ~- | else
& g( w! L% p! c+ Y0 ?1 S: M7 O( c) n <statement sequence3>;
9 r: b8 t M1 v end;
! r" H( ?( ]" O5 Y# r* Z如果分支比较多，用：6 R0 B6 S- p; z" n( f+ o
inspect <expression>. @- w: ^! x! X) Z, C
when <constant_list> then
I' k7 G3 j( K7 j <statement sequence1>;
# v$ ]' F d2 l; t: \* ~) v when <constant_list> then
) Y- B4 U5 w1 ^- W <statement sequence2>;
% e) V9 X7 `: m* j) s. A ...
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<statement sequence3>;9 U& ?2 J6 k: V( [
end;
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2循环语句
; Y, A& [# W- ]* ^& H/ A& i3 C (1) from <statement sequence1>
1 Q1 Z6 m0 G5 w: ?' a% j2 A until <condition> loop$ k) R0 g" T. r3 A/ w2 t: t! v% p) x
<statement sequence2>;
& b! J5 J* u# k5 E0 M3 F4 O, I end;2 O. h+ |$ D) V, P& a! s. q$ s
(2) while <condition> loop& \, f6 [2 U; {
<statement sequence1>;
( |, K6 E. g* i# x5 m, | end;
5 }! ]8 |1 E) I5 E (3) repeat ! r; l, [2 k3 ^: ~% g
<statement sequence1>;( o6 `2 G- R; p! h' Y7 [
until <condition>;3 R" }9 N% ?' Q% E$ X; c
(4) for <condition> to <condition> loop
$ ^0 J _$ @1 q! J1 e$ h) y <statement sequence1>;
2 k! \) Z5 e) M0 e+ Y8 D next;* U' x! J$ b, Q3 e$ a8 r. J
3中断语句
% Q( W+ `4 v9 ^- ?9 F* [8 n% i3 } waituntil <condition> prio <integer expression>;
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3 |* ^: e4 C! C0 g, i以上为常用的函数！
* K$ Q0 p. y0 K( `+ {. j9 S. h" O还有很多，如有需要我把资料发到你邮箱里 % L8 Z0 a( J/ N& ]8 m
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