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发表于 2012-11-13 08:48:12
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1判断语句7 A! p6 ~% y' @: ]
if <condition> then# Z8 b m/ X" p+ q8 \1 v C, [
<statement sequence1>;. ~5 I2 {7 \9 r% r9 N5 U, [
elseif <condition> then6 }; l8 h6 a$ \- m2 r$ D, N% M6 R2 k( r
<statement sequence2>;
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6 z0 @/ p/ V6 r2 |) L. R- T% J% k <statement sequence3>;; G" |# C$ T+ g5 K) |
end;4 B, [; P- R+ H k; @
如果分支比较多，用：
* v( ~% i/ x9 G1 H6 L( l inspect <expression>
) G8 @' v( {- K* z: }' n7 _3 I, B when <constant_list> then
( Y. L; B9 w4 z4 k4 [+ a <statement sequence1>;5 N9 I3 R- C3 i! D$ \1 H0 b! u
when <constant_list> then
. C/ G4 f2 `: |+ A2 x2 I; [ <statement sequence2>;& s- a1 b3 e6 g& v- L2 Q
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else3 F) Y; j; \! J) _
<statement sequence3>;: Z+ d5 \/ Z! I8 l, W8 Q3 \& V0 P% r- M
end;
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: E; S u0 b! O1 r+ H* R2循环语句# a4 C8 z0 u/ _ e& R" Q
(1) from <statement sequence1>
6 C/ I. W' \1 c# `& w8 G( f until <condition> loop2 D9 a2 h. F, c1 N$ @: k
<statement sequence2>;( K- C# o/ h( H+ I
end;
: n* T( H1 [- u( Q# U/ w8 C& W (2) while <condition> loop9 ?# N) X- K9 ^# G. l8 I
<statement sequence1>;: ^6 ]' c# j% ]8 v- f
end;
& F% A: o8 U0 G4 s (3) repeat
d' C4 f+ a% Q O4 i3 w# |! p <statement sequence1>;' T% v4 M1 S" A& \
until <condition>; Q' B. z' r9 C: O: O
(4) for <condition> to <condition> loop
6 m( a: p3 V" |9 {. c5 N8 W9 ~: f6 x <statement sequence1>;5 e9 m) i4 I$ R/ T0 H5 ]" \; G5 C! P7 O
next;
V9 {& q& `- }2 q$ t1 H b; g3中断语句0 D& e }7 `* G
waituntil <condition> prio <integer expression>;
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; ~' w' j8 |6 Y6 Y- L: p& b以上为常用的函数！
+ e% d) w I% a; s5 Q: J d还有很多，如有需要我把资料发到你邮箱里
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