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发表于 2012-11-13 08:48:12
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1判断语句7 s0 S: D M! ^/ v+ J& \: s% F3 e
if <condition> then
# }; g0 O( }- d; _3 l, B <statement sequence1>;4 N2 f* p0 f2 w7 J3 L( H/ C
elseif <condition> then5 y9 N- w% A, |7 F( O; G. h2 d
<statement sequence2>;
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<statement sequence3>;
6 [9 Q' L" H ?# I3 @ end;
. M, `0 w G6 O0 J9 b如果分支比较多，用：
! C4 C: i7 n( a" |( [7 s inspect <expression>
) i5 [6 V( p4 z3 z, ?* s when <constant_list> then8 u$ l, x. j, f q8 E, [! N/ A
<statement sequence1>;5 X: |3 J4 g! z
when <constant_list> then
( |. ^* W% z. `8 S U6 ^ <statement sequence2>;
3 r3 f# ~4 B. S0 N' t ...
5 F$ A; w0 D; a% _ else
3 _) z2 ]8 i A9 p; [ <statement sequence3>;
" k* J% ~, @& z- m8 q4 zend;
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) ]; G6 x ]- Q- x2循环语句
$ n3 O/ u- o8 \% w1 X$ N) G- I (1) from <statement sequence1>$ Y( X( u7 |$ R0 v
until <condition> loop
, @' |/ q' J5 w- S6 ]. z <statement sequence2>;
- ^3 A o) F# l8 }7 v4 N8 {* c end;* U. z3 X/ t( c9 R
(2) while <condition> loop! N- g$ a% z1 v9 Y6 y
<statement sequence1>;% r4 [) M4 ?/ i0 q0 E3 G' q
end;
' z+ M, s1 p8 S0 h7 t# N* u (3) repeat 8 ~% Z( e& K+ ?8 |. g% C/ ^1 N
<statement sequence1>;
3 |7 q0 X6 {* m$ u until <condition>;+ a: x6 r, h8 l+ Z
(4) for <condition> to <condition> loop7 M7 ?9 M' ~' M* E
<statement sequence1>;
5 ?" @( q% r- [% a. @7 X% X# g next;
2 m3 V; u& {( m2 }3中断语句. s* C7 K! Q Q& `6 E
waituntil <condition> prio <integer expression>;! q2 E2 J% `! K3 B0 Q
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: ?# {% e6 O# \0 I# q
以上为常用的函数！
# _7 K0 C7 o' w* _/ z& u. x还有很多，如有需要我把资料发到你邮箱里 . R' b9 \' |) ^/ d1 i+ N B
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