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发表于 2012-11-13 08:48:12
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1判断语句: r8 T" H9 M6 f+ Z% R
if <condition> then
0 ]# r B4 R0 h) A- A; k/ e& g# X <statement sequence1>;
' Y5 k( {" n0 t# E$ L- S elseif <condition> then
' @" Q) w1 _: k% z <statement sequence2>;
1 z- b: ~" m3 `. D4 o& w0 C" Z: r else & p( R, q" |: z3 j
<statement sequence3>;8 {/ e- Z7 G0 [* n$ [: ^8 c/ b
end;
! u2 z; b% t0 [- a: Y- r8 L1 m8 k如果分支比较多，用：
s/ n0 g* Y& ]% \: X3 ^8 n9 E; G inspect <expression>
0 B: E, Z$ E2 P when <constant_list> then3 m A3 f/ I. I+ v. R; w
<statement sequence1>;
# I7 r6 w1 p0 e# k) X when <constant_list> then; a1 [5 v, A6 v( o8 M) O2 O3 O3 k' n
<statement sequence2>;
+ k& Z) ~1 {7 K j ...
8 L; V$ {" o7 g9 r# w else' q% T, z; Q# B7 Q* F# d9 }, E
<statement sequence3>;) r7 [$ e: |4 R
end;
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+ a% N/ o E6 A/ P% c4 y2 x6 ^8 D2循环语句
$ S8 S w5 N o$ x1 b/ s (1) from <statement sequence1>
8 M, p* u% Z) A until <condition> loop
7 A ^2 ~8 ^$ V* o" l4 q% ^6 W' Z <statement sequence2>;! ~$ Q2 f( \1 m, A5 E
end;! J S* ^$ k; w/ J5 o
(2) while <condition> loop: Y5 K3 V0 ?2 m! N9 K' L& K2 Y
<statement sequence1>;
2 X, x5 o* t/ U# D" j4 j$ w end;
2 k+ O. |, i5 Q (3) repeat 4 y* [- W6 ?% p2 [3 e. c
<statement sequence1>;* q; n$ [( |+ a# l3 z$ z
until <condition>;
5 X# M3 c, d( @* [$ K5 Y- v (4) for <condition> to <condition> loop
! Z1 Q$ K. O* c8 W T$ l) d <statement sequence1>;! W9 Z( ~$ O- F# A' T
next;
; R% l: {1 D- o' b( B3中断语句
* t* {$ N) ?7 }7 J) H waituntil <condition> prio <integer expression>;
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* O) Z( s9 b$ ^: |' n- o
以上为常用的函数！' w* O6 S! C; j% g& T
还有很多，如有需要我把资料发到你邮箱里 % I* c4 q- ^7 D# f& o" t7 C3 n
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