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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
5 G% ^+ R5 D5 r8 P* W' S if <condition> then) Y$ I: E3 l# g* z0 ]# h; f
<statement sequence1>;% G/ E: D# Y8 N. a' n+ [
elseif <condition> then
& V9 W. K, o# z: z <statement sequence2>;0 r2 B1 o5 g/ }) H1 ]
else 6 O/ i3 X0 e N
<statement sequence3>;% S$ c3 o# |8 ?! D, r3 `9 Z
end;/ B8 R9 V# u) V! t2 m3 e0 }
如果分支比较多，用：4 I. Q1 K) O4 V
inspect <expression>$ t/ p# c7 E8 f1 t7 w( P
when <constant_list> then
6 v5 h& {' K6 S# b4 q <statement sequence1>;0 \& U1 p4 ]; C' q; y
when <constant_list> then; m% N: q$ v# G' \+ y2 z# j/ V8 x
<statement sequence2>;
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else
8 T- B( a7 A8 Z/ l! @1 U' Q9 C <statement sequence3>;1 k5 j9 v. }- V
end;
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2循环语句
9 s; R- n! W" p8 x; p- K) I (1) from <statement sequence1>: S) g$ [" s, j5 e" q# k
until <condition> loop9 O0 r b1 h+ ^; L
<statement sequence2>;
" I% j! s1 J4 f( u+ E end;2 Z* o2 m9 ^; Y0 f
(2) while <condition> loop" C7 i+ p3 X% [4 y
<statement sequence1>;4 w" y4 g6 q' d3 }# F) s4 h
end;
7 o5 I, @/ _2 V' G+ m1 c (3) repeat
' H* E2 s2 U- n8 G+ ] <statement sequence1>;$ f' ^+ {" Q( @) v3 E( E- K
until <condition>;+ N) _& \- \; f9 k& b+ V9 i# h! O
(4) for <condition> to <condition> loop
7 ~& J5 Z- L) z5 i! I <statement sequence1>;
& A: S4 y! S2 P3 a1 p2 m! ?+ | next;
0 H7 w! x( N" X2 `6 C- @1 m3中断语句
5 z4 D, U" u6 }2 J% W waituntil <condition> prio <integer expression>;
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* P/ P3 U; o' B- w以上为常用的函数！+ g' b: `# R7 d$ H
还有很多，如有需要我把资料发到你邮箱里 ! ?' R1 o* W& {5 x+ k
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