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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
4 W) N- j5 r5 O" J* M* Y if <condition> then' ~; q' T6 B# S: x) t) w2 ]
<statement sequence1>;
/ |- ~( X+ v& ]; g7 ~9 B5 q* g8 I: z' o elseif <condition> then3 S6 E* P% R% ]1 e" y4 [8 f! k
<statement sequence2>;
, y: F$ w1 E- Q! V% `1 K" w0 A* w else
& ~ V% V' L; { <statement sequence3>;" @9 E, b1 ^7 V1 }/ t
end;1 M" ^3 W6 H9 h6 o* O
如果分支比较多，用：: |" c* p" c1 m) h- J
inspect <expression>- g+ m) B) s. F2 A( W P' K
when <constant_list> then, K# }* d6 v% d* O; B% h6 J: _
<statement sequence1>;
1 z. v# g4 U7 X- R& i when <constant_list> then4 a7 d- U! s; c1 F; I1 V! Q
<statement sequence2>;
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else" n+ g' y4 R, |4 z. V
<statement sequence3>; j# M( O4 u. H1 T
end;1 e/ o! y9 @9 R+ w5 Z
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2循环语句
' d) F2 I2 }0 N& f0 U Q (1) from <statement sequence1>
8 N' b2 k& I5 z# T* c until <condition> loop; p. ]9 N$ E$ C) D; G
<statement sequence2>;* \7 T0 y8 R+ g) N1 O* M& v
end;% z z( P) z4 S% d+ ]
(2) while <condition> loop
& r& U) b& R7 x4 E <statement sequence1>;0 B/ {/ Y' \% A7 G
end;
+ ?4 x% I/ u9 `8 B/ s (3) repeat
" j! C7 d% c f3 ^( g" ]4 L5 u* v3 i <statement sequence1>;
- I: i: I- h$ h. j until <condition>;5 Y3 X, G8 {) `
(4) for <condition> to <condition> loop9 \% u6 l- k, u3 ~
<statement sequence1>;( m9 v/ z) }8 b- l7 I) t$ U
next;) V- I' x z' J4 \
3中断语句& Q9 d+ K3 u7 P# |/ G4 r
waituntil <condition> prio <integer expression>;" D3 W) N: z/ `$ ~4 r4 x
1 s: W0 \6 d% D! U0 @# ?3 Q, d& Q' o1 H# }7 C, j. \, [. y
以上为常用的函数！" O' _, M+ _" u$ _0 |2 O! Y
还有很多，如有需要我把资料发到你邮箱里
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