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发表于 2012-11-13 08:48:12
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1判断语句) b, f- p! B. K1 R6 |, G9 W4 H
if <condition> then# O& Q8 ?. ]1 L2 h* f
<statement sequence1>;
& n6 i% N/ p) L% ^- B5 r) X0 u elseif <condition> then& k/ O, h! b9 a
<statement sequence2>;
0 V; p3 i, }. y! O; ~8 G else $ b' J8 B8 j! X4 C# Z4 l
<statement sequence3>;
, V( i6 u/ z5 H5 Y6 d end;
# ]2 t; e% P+ l' S如果分支比较多，用：. s, c8 X% Q; s, O
inspect <expression>
5 t) w X/ a0 O when <constant_list> then v2 n3 x! q, E5 L: s
<statement sequence1>; `, W; p$ ], C0 }; w' I* s
when <constant_list> then
) f; x! A7 \0 H <statement sequence2>;
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else4 B& I& H% R3 K$ ~0 u4 b' `+ r
<statement sequence3>;
8 b4 z$ U% n0 F% Eend;& @+ _% W X4 M3 o* h/ @
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2循环语句# i7 w" K0 N# Z- j, V7 M# j$ T
(1) from <statement sequence1>! |1 w2 X! d' v, R
until <condition> loop
! \$ R# N B4 c4 R. [ r <statement sequence2>;
# }: q R3 D5 |+ W6 @8 S end;& M, \1 _% R. l* i7 T2 E
(2) while <condition> loop, b$ P/ K/ [ @5 B
<statement sequence1>;/ w2 H# a9 z8 r5 v: p
end;* b9 w, y* v1 j6 G! P6 s
(3) repeat
# x( t2 K* l2 R5 \ v6 ^4 `( w8 G <statement sequence1>;3 O0 B# j: g- ^ a) {8 |* H- w8 ]4 z* W
until <condition>;
8 A: N9 c9 I$ v8 `+ ^" L: O (4) for <condition> to <condition> loop
, x D/ m& [+ O% c" ~, p <statement sequence1>;
8 s( D6 B" C% a0 c next;
0 P" j6 ~; g h: @3中断语句. K5 u+ m! I5 H8 S& B$ E
waituntil <condition> prio <integer expression>;
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4 g5 m6 y! J& g: y. ?以上为常用的函数！
, y) o7 n7 o, I+ i6 d+ \* G还有很多，如有需要我把资料发到你邮箱里 / n# h! ^- U! N7 G3 p
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