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发表于 2012-11-13 08:48:12
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1判断语句0 k5 x1 E! }( v* N
if <condition> then
: Y) j# O& e& S& _2 m <statement sequence1>;+ z* K2 Z9 i- ~# m
elseif <condition> then; C5 h8 P; n9 C9 a- i
<statement sequence2>;. e0 J6 x" T0 U8 S
else 0 I$ c5 V6 J( N6 k
<statement sequence3>;
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如果分支比较多，用：
* X# y p" u7 U. p) Y& O& p1 }' f inspect <expression>( e9 Z4 B) L( g: e
when <constant_list> then9 N) @& |! ?' X' o
<statement sequence1>;
& J8 u* b1 _% J: ]) \, I$ p when <constant_list> then3 S$ s9 D/ U$ J8 x! T
<statement sequence2>;
$ @ X0 k7 ?8 T4 g ...
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<statement sequence3>;. ^. g m8 ^* S$ Y8 Z
end;( F0 R6 e) f t& O3 l- `5 w9 X
2 c# v2 X. \8 I; v0 B' P2循环语句
1 e: y1 R) Z) o7 T( h( S; C (1) from <statement sequence1>
8 i4 t: } q% c9 o until <condition> loop
4 _0 M) x) x" Y6 e! l) l/ f) | <statement sequence2>;, c* M1 w4 n2 N) A
end;
3 \1 G. a6 m ~0 Y/ P, } (2) while <condition> loop
5 b( }) V$ B. f9 ?' N4 Q <statement sequence1>;- u6 c; p" y! h6 \
end;
* K- m* a4 D: r8 W/ p/ R (3) repeat
. T$ j3 m+ f' x <statement sequence1>;7 G" z8 I+ t6 c) f1 i; f. z
until <condition>;
' E: r5 ]' M, h (4) for <condition> to <condition> loop/ Z% Q, R7 w8 d" m
<statement sequence1>;' j3 n! i+ m0 P2 e7 j
next;
& Y: e! J5 p# k9 e9 Z3中断语句
M; t, L5 o+ S2 V7 l waituntil <condition> prio <integer expression>;* `1 b$ K# U# `! g" x c
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以上为常用的函数！" s1 E; d. H, D. l! g2 Q7 W
还有很多，如有需要我把资料发到你邮箱里 7 u7 u, _8 l) Q8 |* f* ]0 Q
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