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发表于 2012-11-13 08:48:12
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1判断语句. P; \% ^4 d% z: f( _( q4 C
if <condition> then9 j3 d( B6 ~' D; E
<statement sequence1>;
2 t5 s3 k' R9 a elseif <condition> then, R1 q0 w) i4 c" Y! N. a/ R
<statement sequence2>;
3 a: ^3 F, a1 m: I else
! U5 { W! a) b <statement sequence3>;# l! e% v( V3 Y( M$ [2 [
end;
2 }" t( ^ F# M: O$ [如果分支比较多，用：' Q, V, o. [" ]- W8 W: E6 q
inspect <expression>
. T& T- h' ]( s! O* ?3 C when <constant_list> then: J @ @6 o, E- j7 Q
<statement sequence1>;* Y$ ~! l$ v1 L8 f7 D" t- B @
when <constant_list> then
# ~6 ~$ F+ N: N; m1 }3 }0 y <statement sequence2>;1 C* ^7 \1 {2 b1 m7 ~
...
7 x' r0 V3 e% U' `5 }. M+ L else
. J+ R3 j/ J; i6 Q <statement sequence3>;* v% }7 D1 ~4 N0 K4 K
end;
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% s" Z% D6 T$ b4 T4 X# K0 \2循环语句
$ C; q, S6 }. r7 M3 _; C) D1 D (1) from <statement sequence1>
* a* M& o& k" w: u8 `7 g1 ~ until <condition> loop
a+ O! N) m' C8 g! B <statement sequence2>;& }, ?7 B7 e# N& ?: y8 A3 S( M( e
end;) Q, r# _7 |5 t4 e
(2) while <condition> loop/ m9 D' u1 F+ q
<statement sequence1>;. v2 R8 C8 ?4 m+ |. }2 Z
end;
- R. p( v0 L( {' V/ O (3) repeat
4 E2 k: T. {5 b <statement sequence1>;
* a7 `# p8 d/ A ]" w7 E until <condition>;
' A9 S) y8 d& v (4) for <condition> to <condition> loop. I% t! C' Y, [- [, j
<statement sequence1>;7 i/ {4 W$ v$ b1 k3 P$ r8 j5 E
next;( L3 |' D+ H" X* ]9 T. v0 F3 L
3中断语句
! p5 r* o8 a0 \ waituntil <condition> prio <integer expression>;6 Z8 q$ i" J( h: {
4 G% d/ s. G7 W! S" Y
9 Y! j/ w% @0 [- e, j# g以上为常用的函数！
2 y, o# X4 v+ S0 `& j还有很多，如有需要我把资料发到你邮箱里 ' n3 V5 o0 ~: n7 @+ I; c' B* {
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2 a7 O1 a% p) ~" D/ x; p" `) O
4 \: A9 u' Q$ I" ^4 P/ Y
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