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发表于 2012-11-13 08:48:12
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1判断语句 t8 |/ C5 a2 f7 A0 N. ]
if <condition> then2 a7 v, q/ K3 Q5 k0 E' n8 R
<statement sequence1>;
# {5 B2 H7 R* U) E0 L elseif <condition> then
1 b! D0 d9 D8 p/ a6 ?# f <statement sequence2>;
8 C# o' P6 b" B ]4 f5 B else
, r( i/ w. y+ Z" H <statement sequence3>;
. o7 S' j6 a$ s' D1 t end;
- {5 X, l2 g0 U8 ~2 K7 p, L如果分支比较多，用：
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when <constant_list> then
) p& P' ~0 K' q0 ~ <statement sequence1>;) S ^ y3 R! C( H
when <constant_list> then. n. g6 b& [) {9 Y
<statement sequence2>;
5 L5 D6 `' e1 i ...
# l4 D: F% W1 t else
5 \! j2 n8 h7 S. \( F <statement sequence3>;
5 p, p% l3 l; A+ |+ Z0 _$ iend;
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2循环语句
3 r6 p3 ?. l. l" N$ W1 ` (1) from <statement sequence1>+ Z0 ~4 I; w8 n3 m8 ]
until <condition> loop3 H( \. o+ K9 ?4 i% X/ b
<statement sequence2>;
1 r7 ]' _% X5 E3 d2 I: d* e3 D# h end;9 |' N7 o: h. Q J8 m/ ~% U
(2) while <condition> loop. |2 y! t; Z X0 ]& H0 ^& E" i
<statement sequence1>;
# D& m/ A6 V5 n5 T/ @ end;
& D( |+ q& ?# t$ y, n$ f% i5 P (3) repeat
: j L$ b9 |1 V L7 z1 @) r8 J <statement sequence1>;
% O y! R9 t: m% O until <condition>;% l3 @5 o9 S( _
(4) for <condition> to <condition> loop0 V. r8 @, E/ [% k" R
<statement sequence1>;
w2 x/ g7 X3 f( Q next;
* @/ Y D/ u. M* \3中断语句
( m6 U+ }& n; w8 G waituntil <condition> prio <integer expression>;. Y! A' F* r! t% o y3 ]
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0 [# v* m, n8 I( `2 b以上为常用的函数！$ d8 ?6 c/ N- N( [: |2 ~! H3 P
还有很多，如有需要我把资料发到你邮箱里
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