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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
6 B8 ^2 q6 u6 E& o) F( k7 G if <condition> then, I7 [' M+ ~) Y7 q @0 H" \+ W4 j
<statement sequence1>;
/ ~ P2 X1 j7 ]- x2 W# t elseif <condition> then
; g7 }* g( d( r& C' m/ }& c5 i" e! w" w <statement sequence2>;
) m/ z: V) t" D- s else ! @# ]! F; p$ H1 Z, \
<statement sequence3>;8 E/ r( C, u6 L, g( R3 ^" A# H4 l
end;. x9 j# R u( ^! j( F- H- ^1 m3 y
如果分支比较多，用：4 Y3 \9 u4 z6 d% [
inspect <expression> X* v' b7 v5 w' D' Q' i
when <constant_list> then
, F. ^. V- l8 n9 e <statement sequence1>;
$ i' ?5 R/ f. v( S2 l$ e- Q* E* \0 h when <constant_list> then! t, R0 M) p. y! F3 `& s
<statement sequence2>;7 s( A: B4 V9 s" m0 n
...: A. i8 R6 e1 |6 ^, s3 v. W1 g
else
7 r0 D8 b/ p4 \9 E0 ? <statement sequence3>;8 e1 c# b) f- k+ K n; x
end;+ P& x. b5 M: _+ y% P5 V
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2循环语句4 c6 z6 S, n% t! n6 e- Q! U! n$ U
(1) from <statement sequence1>' K6 D' d4 p. F! O M
until <condition> loop
% j! D4 g1 p/ B3 h6 X: k3 F <statement sequence2>;3 u: c6 Q0 N- m* h' ]6 a5 X
end;
3 B! f1 O- b* m6 n, X& ?6 a' U1 H (2) while <condition> loop
; Z. ]# [4 P/ a7 Z <statement sequence1>;7 D$ m- Y9 B4 @3 q
end;
6 J2 ~* M7 U; |0 {3 t* d& @' t (3) repeat + h) f4 f: G& t# H/ f" e' s
<statement sequence1>;1 o8 U) R# ]$ C! D- Z; E1 E3 l
until <condition>;
1 [4 i3 U9 H% g! M (4) for <condition> to <condition> loop
7 h( P' v0 h1 B- Q <statement sequence1>;: ~% F; {+ @8 r5 l
next;
8 U: P) c. T( B: l' \3 ~3中断语句
& x$ @, \+ d1 \/ M waituntil <condition> prio <integer expression>;
' N8 a1 G& G# ^( S* P1 ]
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以上为常用的函数！
/ c4 o6 z/ B0 V- L) o, t5 h) O1 _还有很多，如有需要我把资料发到你邮箱里
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