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发表于 2012-11-13 08:48:12
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1判断语句5 X( B7 G! T T7 p! M
if <condition> then
5 T! Z4 K8 ^: ~9 L% I+ ^ H <statement sequence1>;( y/ H4 T g6 |4 N: ?) {" w
elseif <condition> then# H4 A3 V* P# L/ Q9 Y8 L [# u
<statement sequence2>;; u: g, { i7 J- @; H# k% g2 n
else
9 k- G9 U( A" P1 \8 W+ i9 f <statement sequence3>;5 S6 N+ K4 C- Z9 [, S1 g" Q
end;% Z% ^& `- o6 B4 j
如果分支比较多，用：" E# K0 R: M" |4 h \* v
inspect <expression>
7 V9 j/ I; o0 x: i' F+ z y, E when <constant_list> then
, c& P3 n5 b3 I! U6 u8 h9 H <statement sequence1>;& j5 ^4 b% \; f/ Y9 }
when <constant_list> then
, Y/ J. F, v) w% Q <statement sequence2>;9 x. h2 ~3 a: C! G7 S
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else
/ d5 ~, H6 k% m% ] <statement sequence3>;/ G1 ?# x, ]. H5 I" Y! K# O
end;
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2循环语句
& S% V {* A7 r6 y (1) from <statement sequence1>! y& A5 }' {+ T0 |2 N% ^1 Y
until <condition> loop( @# T3 ^$ D0 w+ G1 D
<statement sequence2>;
% ^6 n9 {. C8 M' j end;$ U3 B; c+ y" K; K8 D/ J( E! c! O
(2) while <condition> loop+ B6 |2 v6 L. q, B! F
<statement sequence1>;6 k% Z6 ?6 o- q6 t3 Z
end;4 b( s9 f) P- |1 p. W2 N
(3) repeat , `# w+ a0 W6 B6 m' K h V/ y8 O0 U
<statement sequence1>;
/ M4 L: ]- s. M# h9 R; j until <condition>;
# }2 m- H/ d- b8 a (4) for <condition> to <condition> loop
& W: R. I0 {0 _! H2 i <statement sequence1>;
7 |# z* r5 N, \( a" y! K+ W( D: f next;
u2 O+ p% S6 K" C7 i. Y9 b/ v+ o3中断语句
% |. r: ]/ @) Z5 X1 L6 m waituntil <condition> prio <integer expression>;7 m: D" W$ ~- G* M- Y- u
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以上为常用的函数！
2 g" Y0 J, N- ^2 @: `) A还有很多，如有需要我把资料发到你邮箱里 , s% K( v/ m- X$ v4 ^0 A, R
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