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发表于 2012-11-13 08:48:12
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1判断语句
4 s R0 k# H: ` if <condition> then$ B$ z# Y8 O$ g) ~) I2 Q1 T2 [
<statement sequence1>;
8 D/ q& P4 g2 X! w elseif <condition> then7 E. Q( }" j: B7 N7 m# o' L
<statement sequence2>;
N8 B; B! y/ | else
) q. e& f% b1 [$ b( h6 z5 C <statement sequence3>;5 v) q) d. I7 k- m# a
end;& V) ^- h3 n; m9 t
如果分支比较多，用：* K& h3 C' Z. c: l6 j; \( P; i$ d
inspect <expression>! q# L4 K+ N! q
when <constant_list> then" J0 K+ F R# L* H4 N: V
<statement sequence1>;" |; E; o9 }2 \
when <constant_list> then( k- V+ E6 R) v3 P9 A+ G4 O
<statement sequence2>;
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else4 G' s5 V/ o3 ]" L+ o8 C+ g' H3 t
<statement sequence3>;- r% }/ z' n# T# F
end;& W+ Z7 y9 t6 }, O; X+ z# w7 y
! i% [7 _$ V! W& n2循环语句
. X6 J6 X; O x" K: |; n (1) from <statement sequence1>
# l4 S: b- L! Y H3 P until <condition> loop( r9 U$ u6 x: A' S) T7 y3 ?, R
<statement sequence2>;
) M6 g! H+ @. l { end;7 W/ N& J& p! q; B0 c
(2) while <condition> loop
0 i4 p# q! N9 m3 Y, ? <statement sequence1>;- w) P2 }2 z6 g9 D. V5 r( H+ @
end;
! E7 S2 a6 s3 e6 n (3) repeat
, n8 [5 ]. @ L e& e) p& ]. a' G) U <statement sequence1>;
_8 M3 j* h- {5 M until <condition>;0 ]- I7 f" g; m. K
(4) for <condition> to <condition> loop; a) n3 N( T& F3 P2 |7 a
<statement sequence1>;7 Z7 y% E0 y1 a, q* Y n8 a
next;" {5 @! O. J9 ?( F, b
3中断语句0 {$ k; p6 W, w" ~. F! X
waituntil <condition> prio <integer expression>;
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7 t& `# d$ x# P8 I3 J3 `以上为常用的函数！
* s! Y+ ^9 Q1 f- V. E还有很多，如有需要我把资料发到你邮箱里 8 _" A" G0 ~* L8 H9 P5 z
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