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发表于 2012-11-13 08:48:12
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1判断语句; ^; h" c6 z5 Q3 C
if <condition> then% r2 O% O1 @, ]
<statement sequence1>;
# s5 J+ V1 J, O$ y elseif <condition> then8 J* u+ ]3 k D4 _7 ]) _
<statement sequence2>;
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<statement sequence3>;- `( J1 c8 y( _% b) P# x7 ]9 E
end;
- X( ^% @7 E) q- m& f& t, G如果分支比较多,用:6 r/ N! i8 L' y6 B8 c2 C: }# w
inspect <expression>
3 t" X9 f0 G. v4 U+ M$ V when <constant_list> then
6 R4 m5 t6 g& f! ^) p <statement sequence1>;& t; o6 I% J; P1 ]1 C2 T" } F
when <constant_list> then) g+ v1 @* N8 s% m4 v
<statement sequence2>;
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else
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end;6 |+ N( F# H4 g; c5 p3 Q
& L$ n$ \# L) w9 r( q2循环语句, c) ]0 s- D6 s# z; D2 V# O$ p p
(1) from <statement sequence1>
) o1 j4 [$ e5 N until <condition> loop
4 M. A8 _5 U9 ]) c1 {3 ^' w <statement sequence2>;
" _1 s$ r. @3 k% F end;6 P) ]& N( o( E
(2) while <condition> loop) A! p2 K# A$ C8 r
<statement sequence1>;
% l& b& C. x. [4 U end;
0 P6 ]# T. j3 V, z, A (3) repeat
% [- Q, t7 W8 `4 E* ~5 K/ e/ D0 j <statement sequence1>;5 C# _* k$ t4 A
until <condition>;- H8 P- W( `& r3 l
(4) for <condition> to <condition> loop
' ~6 e$ j! {4 c- ^ <statement sequence1>;8 ?' e" ~' \& [( {- R
next;
5 a6 o$ l ^* v3中断语句
$ ^3 |2 ]9 M2 Y! T% Y waituntil <condition> prio <integer expression>;5 J) ]3 m! d, b
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# `6 [. Z# X' e1 [) J' B以上为常用的函数!2 [* q7 p* T. M% f, c
还有很多,如有需要我把资料发到你邮箱里 * n, v/ p" Z: {. J: v7 P- c
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