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发表于 2012-11-13 08:48:12
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1判断语句
. I9 O- G! |2 h! j! _/ v if <condition> then
1 j( Y0 ~1 C. E3 E5 M( D <statement sequence1>;1 ?3 A# U4 T+ x1 A" K3 S
elseif <condition> then
3 M( u0 V# ^) k7 w" F <statement sequence2>;
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<statement sequence3>;0 o, Y2 u4 k! n$ }. z
end;7 }* |) P8 ]: M
如果分支比较多，用：
c1 L7 ~9 R$ }) ]( F2 F inspect <expression>+ y% k0 v# b6 G4 y! ^3 c
when <constant_list> then
! p+ I" S* V1 C$ j# l6 H+ w <statement sequence1>;$ W4 M0 v3 r( S% d6 Q
when <constant_list> then
" l! r: D! F, r: c3 C& p4 h5 e; A. x3 u <statement sequence2>;
% [& v" m, F' u6 i4 x3 E; o% ? ...
) z5 b; X+ G0 D2 y" O' r6 V else
4 ~, S- V+ ?: h$ h' R) v6 G <statement sequence3>;
! e# A+ ~, z- K+ E6 nend;9 O( ]- M3 g! ~! ]. t: Z
3 z* y; F% l3 `4 s6 K7 d+ y2 I2循环语句( ~ r0 `: ~) C& `
(1) from <statement sequence1>9 f: n& K o" a I; w
until <condition> loop
: a: U0 }4 c3 D' ? <statement sequence2>;
3 K! i+ v. _9 H+ b! v4 K: Z ?( B end;$ ?0 S/ w0 U/ A+ B- R
(2) while <condition> loop
7 z3 H& r$ H) E* ]- f% o' ?: E <statement sequence1>;
" q* B9 c) B" \( ~8 c end;
: J2 p& Q5 M$ B$ H2 p+ { (3) repeat % {4 {) g. R0 V, R/ w+ V5 |
<statement sequence1>;. u% Z1 g* s- u3 K# }4 g8 |$ Z) U
until <condition>;
2 W k: Y, W+ N% U0 ?5 \. R; ` (4) for <condition> to <condition> loop
- \/ N Q" f4 ^ t: S4 H1 z. r <statement sequence1>;
( A2 P& Z5 y& R, Y% b! s next;
' }* l" i' |# ?3中断语句
b9 J1 a7 G9 b; z; j% p waituntil <condition> prio <integer expression>;9 O& I, z/ p( y. B9 B3 G) d
3 Q2 Y. Y# z" s( D, A- s
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以上为常用的函数！
$ S( K; T- e$ Z& I2 ^还有很多，如有需要我把资料发到你邮箱里 . e8 V$ K9 g+ S7 a/ z: e7 O" C
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