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发表于 2012-11-13 08:48:12
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1判断语句
! a# G0 I& U8 \! j4 Y0 M if <condition> then
+ h* E9 }% W, ^- r; J- K6 \ <statement sequence1>;
2 D5 R o3 O) \6 j) R8 M2 S1 E elseif <condition> then
% j6 u3 p Y& o$ `9 D7 W; t% _ <statement sequence2>;! B) x! Y% ]6 Y5 A+ [! {$ ]
else
% \0 M2 f: N) ]! z <statement sequence3>;
: P- l2 e6 e0 |5 g3 F2 \: M end;( t* j7 k1 g1 r& w& g
如果分支比较多，用：
# P( Q+ Z/ c5 j$ V1 s! k inspect <expression>
4 w* f" H4 F7 D7 e+ |$ D when <constant_list> then8 ]$ X) f+ A1 R& @
<statement sequence1>;
; r Z' o0 ]+ O3 _; ^ when <constant_list> then; \1 @! Q' B7 e4 }) }9 \
<statement sequence2>;) M4 p) |& W+ H$ h* ^
...
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<statement sequence3>;/ Z* j3 H7 h4 Y4 s
end;
t+ @/ i4 u6 A; ?
; P/ z q+ C) s( `; I/ k w2循环语句
. I* ]0 ?) Z5 C& Y% Z! X8 i( K (1) from <statement sequence1>
+ w% z/ q" g' k8 X6 } until <condition> loop
. D- m# d8 g4 ] <statement sequence2>;
: {9 R, m6 ], x% n0 T1 b4 L end;
1 j( z* i* x, p4 l6 e$ W& B8 B (2) while <condition> loop
4 A( K3 H/ I% A' N <statement sequence1>;+ u; l) v2 W. J. F2 q" H- S
end;
# {: ]5 }5 G* h; v (3) repeat
6 ^" g* h y: ]" `3 Q <statement sequence1>;
6 v8 m9 ?. P/ l. K until <condition>;2 B0 d* o3 q) V5 r; {
(4) for <condition> to <condition> loop0 |! {( A) r. k6 e z
<statement sequence1>;
) `$ [. I4 {4 c. k3 k next;1 w8 Z4 R" ~8 H+ f: R. B
3中断语句' G$ t+ Q' L2 R
waituntil <condition> prio <integer expression>;" B/ X) c+ }; D! O* m6 J8 Z
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5 P& k* e; o! n7 d0 f; \; @以上为常用的函数！8 ]8 f+ H. N$ v
还有很多，如有需要我把资料发到你邮箱里 4 g9 ^( @# W1 t1 V q
- j: }' B* w; M+ j% Q# ?
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