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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
6 a: C- ^* E) |% N6 ~' N* H! s) \+ Q if <condition> then$ E: `% h9 z; T0 H7 ~- e
<statement sequence1>;
6 f' k6 T' Z( _5 p6 r elseif <condition> then! W* o' D4 o5 I, `
<statement sequence2>;$ N# C- v7 o' ?# T. j% }$ v. H
else 6 I- B9 p7 W% Z& _3 H
<statement sequence3>;
% s- H9 u) @, ]4 J; v9 m/ N end;
. z+ r3 L, z# V. L6 o/ a% S9 ]6 O如果分支比较多,用:: u! b3 c; E0 j4 \3 [# X: [, ~" `' h% |
inspect <expression>
2 l3 x; n+ G4 `! g4 A; N when <constant_list> then% \ K; u% m- e- R* g) |( R
<statement sequence1>;) H/ s, ^7 K f, i* q; j- r
when <constant_list> then. s* _/ ]3 B( U
<statement sequence2>;
9 j" p" ~% U5 F( e$ M) E ...
" o& S/ A" t5 U2 f+ p8 |" L3 u) o else
9 C2 A6 p' i7 ]( v! C' |/ Z% k3 h <statement sequence3>;# ?: K5 t3 n8 s8 M+ ~) c% z: C- P- z
end;
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. P6 R& }4 r& B& t2循环语句
8 T m5 e7 v- n% T$ S# x! Y' N (1) from <statement sequence1># y2 S( p8 e- ?. L% }
until <condition> loop
2 o$ N/ Z& `1 f" @; A! s <statement sequence2>;
6 n: f6 z. O$ Y3 P) n7 ^4 m M end;
$ c) d. y" h7 w; x# W1 K (2) while <condition> loop
5 M q4 o# `* o$ D6 N) q+ l <statement sequence1>;! F1 z0 c P# o; d A9 o7 }
end;
1 J# _% Y. s: @ N- [) f (3) repeat N; J/ X1 k( [# a7 \* t k6 f7 r
<statement sequence1>;
: o# ^$ `; v# Q) @" i" Q* v until <condition>;
3 e- X. J4 c2 R( e1 h (4) for <condition> to <condition> loop
! ~+ _( B- ]3 B+ V7 O <statement sequence1>;
5 o- Q8 s1 h* Z5 R next;
& U' ]* N8 e; w9 d2 m2 G! S2 [7 y3中断语句; U# D0 U4 ?2 L4 ^; m, }; x' J3 c
waituntil <condition> prio <integer expression>;
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以上为常用的函数!
0 f+ X8 k- w3 M A- x还有很多,如有需要我把资料发到你邮箱里 2 ]5 O; f- R z/ F6 `' f
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