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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
( ? M& p: `' }7 M* Y! W9 n if <condition> then7 v9 D7 A" |. K0 a7 e" U% \
<statement sequence1>;
2 S* c0 T5 y% x, W elseif <condition> then
7 w" F; R+ x \8 P <statement sequence2>;
' c# e! y: q: o; N. y, R else
3 c/ e6 P. `* A% ^, w5 o <statement sequence3>;
5 m( M+ m' @5 a" v end;
8 i6 v- o2 u3 J. t! O ]如果分支比较多，用：
/ S# T! `# A, @# ~. P, U6 f# _- T inspect <expression>
e4 ~9 @5 R) M1 ~ when <constant_list> then% }' m9 k9 R, \
<statement sequence1>;+ `! C9 E) p+ q
when <constant_list> then/ x/ {- H) M$ b' M, N( K+ _
<statement sequence2>;0 ~( d1 m3 \- c5 f( z
...
6 V5 E- X$ J" {! Y) n* o3 c else
T3 |' K) U! ?* ]1 I: P1 _ <statement sequence3>;" W* R* U4 @9 X0 n3 I
end;
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2循环语句
( v2 P! v$ n& f' b: L1 r (1) from <statement sequence1>
5 S* {7 w' o5 o until <condition> loop
1 v/ V7 b5 Q4 L' O <statement sequence2>;
1 t0 X6 M x+ E end;
0 e0 S4 V2 W+ c$ S (2) while <condition> loop
( \, k4 u; D% H* P* [' k( d: b <statement sequence1>;9 Q" m; S5 X7 v: T
end;: X' I7 R. y8 Y4 E- c \, W. ]
(3) repeat 7 w9 u+ F' `3 f
<statement sequence1>;( C( m% `6 t2 w7 D
until <condition>;/ L2 j8 Z" @) _. x+ |, `
(4) for <condition> to <condition> loop
6 K6 \) ?2 C7 f# g! j! G <statement sequence1>;
# N8 f# I* V4 o7 s7 z3 y next;
( T7 @5 c4 \! {0 g- I+ J3中断语句
. T/ [. |. v8 G8 u6 O' ~0 O. @ waituntil <condition> prio <integer expression>;
/ G& a5 q# Y' i% Z
) S! ?1 J) s: [( O% q+ b. ?% S* o$ H/ K! C+ d
以上为常用的函数！
: y3 J/ o; V6 m还有很多，如有需要我把资料发到你邮箱里 1 \, X5 u# |) O5 I+ v; o" e/ O
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