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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
@0 F" w I) M/ V7 h if <condition> then
. [# q; C2 m5 F% O- H7 _ <statement sequence1>;
3 G; _) h, z8 T4 m4 i, a8 _: { elseif <condition> then' T$ l8 ?' d$ @3 k6 E
<statement sequence2>;& o& M6 n* M/ Y4 O# r0 @9 t1 o
else
! J. j& `: t6 v2 h <statement sequence3>;; Z4 |4 y3 w3 ?8 ?5 [: v
end;
: j' ~2 W5 ~" ?' Y" y- `2 Z& q如果分支比较多，用：
! ]% l0 i. z$ s6 w- f8 y inspect <expression>2 M- F! S R" W/ B
when <constant_list> then
2 J1 U6 p2 d q+ g <statement sequence1>;
0 F( \. k0 t& ` when <constant_list> then
& s# W1 |( {& h/ `3 f <statement sequence2>;
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else
; C6 h2 A) l8 Z <statement sequence3>;
) g* i) A0 R; i# k4 B% c8 ~end;9 T/ t4 O7 ?, k, {$ W; G
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2循环语句
" Y3 f" J& L- C- q% p/ j (1) from <statement sequence1>
1 D& Z5 A3 ?% @$ [) v1 V, K until <condition> loop
1 q2 m" q" K" S. M <statement sequence2>;
" N! x4 Y* L, q [/ z end;! c8 X- H/ P5 R% [1 {* v9 d+ l
(2) while <condition> loop5 w0 ~0 i, s) L: f5 b
<statement sequence1>;
$ ?7 E# o5 w' }7 s/ x end;" P) `5 v$ N+ t- M6 o
(3) repeat
# g' q9 y, q4 f7 s9 x9 H1 x# Q <statement sequence1>;& t) l$ i( E# [6 o3 s Q
until <condition>;4 K! m9 f3 Q- c3 S% x
(4) for <condition> to <condition> loop; z5 n; f- K- T
<statement sequence1>;$ S( J$ Z- ^- ]+ c/ y. B% W7 ~
next;
- h7 L3 O5 y/ j3中断语句' x. Q" m* j9 n6 m2 b& w
waituntil <condition> prio <integer expression>;
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1 }7 r' S4 E$ R1 y1 M以上为常用的函数！& x7 i, y1 U7 M8 k0 v \) I
还有很多，如有需要我把资料发到你邮箱里 - x8 M5 ^& [4 N" [# J% z
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