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发表于 2012-11-13 08:48:12
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1判断语句5 E5 X: U/ O8 o3 U* o$ D/ l
if <condition> then
2 x6 F& D+ `" S9 \9 w2 L) h- v <statement sequence1>;( E5 D, g. x9 j$ \
elseif <condition> then
& |* y( s* |4 e. [& E* b <statement sequence2>;( ?5 d5 a' z, L+ o- B
else 5 m) M6 ]( h7 I9 y( c* E: A9 F
<statement sequence3>;
) _+ V! A7 t! V& `; M5 k end;! M8 [8 J$ B1 S* F8 U
如果分支比较多,用:/ D& q' z; J, Y: `; X0 I p
inspect <expression>+ {, N& m" J% Y* q
when <constant_list> then
q. m! W6 \+ z, q <statement sequence1>;4 S% w! s2 n8 F# H4 D$ W
when <constant_list> then
$ V" l# `7 w6 u) Y' k q4 K <statement sequence2>;. }8 d/ ?' q; B; ^2 q: X
...
/ g9 B- r, }2 u& q$ r0 d, \ else
7 K7 p D0 Y7 m, O6 X4 Q3 U <statement sequence3>;
0 e' _8 f: I7 `# L2 c8 V. t) Pend;
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2循环语句, o, D& }* f1 f
(1) from <statement sequence1>
w2 } v. m5 {9 M# I. H5 T until <condition> loop
% k/ S/ C( h( I3 @6 o: s <statement sequence2>;" S( I7 X$ W. D) k$ P2 b
end;. z, s# M$ R5 m% H( F, T. t
(2) while <condition> loop, _4 _; m- ~6 w" d5 s- F
<statement sequence1>;5 t4 g8 \0 T- d, q, P* F
end;
) `' z1 }- r8 R (3) repeat
! ?* I; K6 b& \1 o3 W" L- m. w <statement sequence1>;' }/ w& r2 e. {1 N+ \
until <condition>;3 G3 W1 K+ [2 U8 q. ]
(4) for <condition> to <condition> loop
1 }$ k6 y$ }1 B, G/ ? <statement sequence1>;
1 X/ a; u6 g1 M5 ?# [4 z6 V6 c: v next;1 ^# ]* l8 x( y5 y, r( {/ ?
3中断语句
0 t; ~9 j, C0 f' B" w/ C( N waituntil <condition> prio <integer expression>;) U# E$ P- p3 Q+ U; b8 Q
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x0 x0 m) X K7 S7 ]以上为常用的函数!) W$ T1 G# d( q5 i+ J! v& p9 m% H. y
还有很多,如有需要我把资料发到你邮箱里 ! b% o/ b- [" k4 r7 |2 M
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