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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
+ t' e+ d( I. X' |! w/ j5 l if <condition> then4 {+ b' O* l! m# k9 u
<statement sequence1>;
7 j% l! P; l3 u/ O! r8 b- F9 R elseif <condition> then9 g J$ D0 r) A9 G' z
<statement sequence2>;
8 n6 n7 g1 M' r3 m! M. ?4 H else 1 D( g% ]7 C3 r5 `8 m
<statement sequence3>;2 q/ n# K: R2 D0 C+ K4 c
end;9 v& T/ }+ S1 D, q9 a2 p/ _
如果分支比较多，用：1 ?9 [/ v$ k2 Y+ k+ Y7 v# R {' ^$ D
inspect <expression>
4 c: d' Y( U3 j6 L S+ G$ s/ u6 B when <constant_list> then6 n. w4 M6 S$ y9 H
<statement sequence1>;
2 e% Y! ^: o( C% r4 ]- ?3 \ when <constant_list> then
, B/ P) k/ U& d+ t0 K( b( q& h <statement sequence2>;
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else
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end;
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2循环语句% G% v* H2 X8 k% k' z
(1) from <statement sequence1>; r. [1 \8 W- ^- F9 W: u2 v
until <condition> loop
- s# c3 K1 B8 m/ A' y. f( z; T0 H <statement sequence2>;$ B6 X2 u7 z% p
end;, {: l; L" z+ }5 j" C4 a# Q
(2) while <condition> loop
4 a5 W1 P) K, N' g0 [' w% U4 } <statement sequence1>;% W3 `# Z. B: D+ ^
end;# N4 |5 u! F7 b
(3) repeat
o7 |6 f6 n- b& B. b- G' w, X* v4 N <statement sequence1>;9 v9 ~* r* {5 f
until <condition>;" ?' B3 q+ |' b7 h* S
(4) for <condition> to <condition> loop
' E: \) F) O! q9 C <statement sequence1>;& e* d9 o, j. ?% l
next;: ^4 u) v2 H4 R5 `( V" o
3中断语句
0 m/ F) R/ M) p, k* l4 B waituntil <condition> prio <integer expression>;
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7 b4 S7 r g/ p8 @9 i% H+ n以上为常用的函数！$ B1 \* \, u' T! Q' i! ~& c
还有很多，如有需要我把资料发到你邮箱里 E" Z; u$ m W1 j7 I
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