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发表于 2012-11-13 08:48:12
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1判断语句. A/ z) N' T# G2 y5 k. `
if <condition> then8 @. x! i( d3 ]2 {1 E+ F( j) n
<statement sequence1>;( A4 m" C, E( R1 C: Q; O, E! \. |
elseif <condition> then5 L9 O* |: B7 [7 u! H
<statement sequence2>;
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<statement sequence3>;/ w& X3 }5 F) J
end;
5 U) D! J& H4 T6 @0 t% Z7 D如果分支比较多，用：! s/ ], ]& D' l4 R9 d& ^4 I
inspect <expression>
. b: { \9 R3 H/ m. d when <constant_list> then8 T* k1 ?9 g1 s& D: H4 a/ e, `
<statement sequence1>;
8 R( X$ T* t. k! _ when <constant_list> then& \, Y9 d3 t( L* F
<statement sequence2>;3 x8 `5 H6 Z, `
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else
( T' L7 @3 L: }1 d" r <statement sequence3>;
0 U; f7 g( s6 g) _0 T Nend;) o8 n# X* P( @
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2循环语句# L& V; Y/ p; \* D" [
(1) from <statement sequence1>! @. v. j# D9 g) H2 m
until <condition> loop4 b3 y- p7 L: K; {0 }! ^5 R2 S: P
<statement sequence2>;( @( d2 ]9 e! X- Z" _! o
end;
|# N, P* z1 K% J8 G5 T) |* E& F (2) while <condition> loop
, Z/ b4 ?7 O+ @+ o+ a7 p <statement sequence1>;4 Z* ?& c6 f6 {8 x& N
end;3 T1 B* u( X8 u
(3) repeat
0 ?% ~# p6 X% N0 h <statement sequence1>;% S" Z3 n4 Q$ h' a9 n/ h) D& K1 |
until <condition>;9 L3 t5 r a5 ?# s0 s. m" x; ^
(4) for <condition> to <condition> loop5 Y# v4 L3 Z; g
<statement sequence1>;
) F& I5 D/ N' D) _3 a1 C next;
) |' n3 [" _4 t4 s' p3中断语句
4 c( W+ y7 \) {2 h waituntil <condition> prio <integer expression>;
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+ l7 |) h! R+ m
以上为常用的函数！
h; k( Z' B4 A4 D% }/ h" l8 \还有很多，如有需要我把资料发到你邮箱里 {- V+ }6 p3 ^7 S
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