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发表于 2012-11-13 08:48:12
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1判断语句' ]) Q& _8 \( u* c) n
if <condition> then
. z, O& ^" |1 J <statement sequence1>;
/ @/ S, P0 n+ j7 ~ elseif <condition> then
: r# o5 T; |+ W8 S- h <statement sequence2>;* E9 t% G' L% B8 b
else , ` F- P1 S# N) Y
<statement sequence3>;
4 x6 P3 I. j6 s' T: }& P7 A end;
" P2 @6 N/ _" y3 f, l7 _$ q. |# N如果分支比较多，用：
z+ ]7 |0 u& ]" I1 z+ N5 j- i1 D- Q inspect <expression>
@0 S3 ~6 m9 Q/ J: a when <constant_list> then; D- O: [4 r* I j# z, d" Q) Z- v
<statement sequence1>;& M y t( T" C" ]8 S C' I8 A& D5 F
when <constant_list> then
7 |/ I/ o E2 S5 E1 { <statement sequence2>;
0 N1 k; T' {; |+ | ...
4 l8 k$ M6 s7 k& e( F! f else, `2 q) J' j. @' I
<statement sequence3>;* p+ T& M2 [3 t# g& z. F
end;
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9 [# O- ]- b8 t1 R9 V2循环语句
' H K, Q/ E3 B0 \ (1) from <statement sequence1>" n9 l+ ~; o7 w: F' s# B# w
until <condition> loop) h. j+ ]# A) k4 ~! X- T5 T7 h
<statement sequence2>;, ` G! N$ c6 _, [7 ^
end;
+ z1 f% {0 e8 s (2) while <condition> loop
- N4 o0 U" E% f/ z# c) Y <statement sequence1>;
8 J0 ~" u& ^3 m9 x1 G end;
7 T' q5 Q1 R+ t4 q+ x; W3 N( V- Y (3) repeat " ~7 |7 S) O) U: p
<statement sequence1>;7 }9 R3 O' I9 v% V. R
until <condition>;
- U( U2 n& _# {. L (4) for <condition> to <condition> loop: y/ v- {- \# o& `* b
<statement sequence1>;
% y3 E" Y% a m next;
3 e3 \" d% f2 k6 }( Q3中断语句
+ `* P* e2 ~9 x! @) S: K! n$ E waituntil <condition> prio <integer expression>;
8 g# X* ?7 K& `3 M1 z* B8 V. p+ C
/ ?1 b6 W7 y/ e5 c- |6 y以上为常用的函数！
5 C& C s& S1 }6 @0 D! a还有很多，如有需要我把资料发到你邮箱里
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