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发表于 2012-11-13 08:48:12
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1判断语句/ d0 a& H& U `6 f% g J2 n
if <condition> then6 P( [) h! A, M7 J: a2 K9 T
<statement sequence1>;
- q1 _. H- f o elseif <condition> then( {9 M, E) m: u# K V' s/ K% ~
<statement sequence2>;/ m3 ^6 D* N% E9 S
else
( ~! D( k5 `! b7 `+ J <statement sequence3>;' _. i& l* K0 G# ~
end;! w. }% a3 F, T' z2 s
如果分支比较多，用：- M$ Z: D: h ?' \
inspect <expression>
; b$ n) T5 Y3 p. }: l, B when <constant_list> then3 j7 L) J9 ^! x4 L7 ^$ z2 X1 t
<statement sequence1>;
( D* I% ?: `* B5 ]) x- g) E+ v when <constant_list> then
9 |3 ^. z. Q: P \' T <statement sequence2>;
4 s. R- M( N4 b5 w4 C* {, ? ...
: Y( C: b$ X8 V1 m h2 O else
- W A& N- e; t <statement sequence3>;
) x& k6 F8 Q! C5 ^ A0 a5 qend;
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* w+ l5 O* \: V# _, G9 x4 Z2循环语句% Z, Z, |0 }0 y9 T9 C6 e+ d+ K. w6 k
(1) from <statement sequence1>' {# ]& p& N3 y$ y6 r
until <condition> loop; O9 Q0 }" j1 l1 g2 X2 V/ R; W
<statement sequence2>;; S1 z4 E7 V5 L: O0 t d/ A
end;' \2 K r, O2 B4 `/ D( N* s9 M, ]
(2) while <condition> loop( h& J4 R( l8 U2 r
<statement sequence1>;+ I* j+ B( U" z( T; C2 o% S* |6 |
end;
# L0 U0 z+ z9 u2 Y5 J& u (3) repeat % M6 Z" e6 T9 E9 ^& z0 [/ e2 N
<statement sequence1>;
+ @: G0 }3 f' [. v+ y until <condition>;8 K( m$ ?4 ?6 x0 j
(4) for <condition> to <condition> loop
9 j; C' m4 R/ `1 H% |( t0 t3 M <statement sequence1>;( f3 A% p7 j& X; ~2 n5 R
next;' Z) f0 G* h( ]: J) m* K. C3 c
3中断语句0 H+ R4 R5 _$ I/ q0 B" N
waituntil <condition> prio <integer expression>;
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以上为常用的函数！ d2 P: g6 w- n: |3 b v' v
还有很多，如有需要我把资料发到你邮箱里 % a" G7 X& n* v: Y, ?
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