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发表于 2012-11-13 08:48:12
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1判断语句. f2 B& i5 ]( @1 L, Y
if <condition> then
& P) T+ S' E) j3 u <statement sequence1>;2 F, P# g1 O# s) H+ M5 |( k. R, U, m
elseif <condition> then
/ `: h8 N4 u$ Q y! |, ^" { <statement sequence2>;8 ^+ \3 J! l3 s( C# p) m5 Y
else + I1 @, [1 \% H9 p/ q5 K& Z4 F& T
<statement sequence3>;$ ?$ K, W2 _- _3 R: r
end;
3 a1 V& F4 F( V, g% z" S$ h如果分支比较多,用:
W# V X/ K/ L* t3 O2 }1 A inspect <expression>
; z3 q( S8 I8 z when <constant_list> then
- r. m; q& G( f <statement sequence1>; t4 y) @$ h; ~; R$ u3 t; m
when <constant_list> then
" {9 I9 w/ S+ W2 z$ z <statement sequence2>;$ ~( \ N$ n8 B5 ?7 [( g
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else
; Z) D# o8 D; ]+ n# v" _ <statement sequence3>;7 b& n. p, ^3 e( W3 E+ |$ ^$ Q, a
end;3 z. q q, K2 Z4 W8 D. b5 L" _; d
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2循环语句
Q4 S- ?7 E- ~- y$ `3 D (1) from <statement sequence1>
8 h, ^* P* @& o5 D9 k* A until <condition> loop" x! v6 U4 w$ Q' C, ?
<statement sequence2>;
% A" s0 a- }2 ^9 b$ a; h% g8 M end;
7 f* j" W$ p' ?$ r9 E (2) while <condition> loop
5 @3 R/ }0 T0 t6 D <statement sequence1>;
2 c! M" q& m5 L W end;" y/ u1 ^8 i* I, Q
(3) repeat
o7 Z- T7 e# d# U <statement sequence1>;
2 ~# s& u) [; ~5 M) Q2 c1 Z until <condition>;
5 V1 n9 q& `* r' P0 h( O (4) for <condition> to <condition> loop$ D# u( l- t/ {. a# X- t. p' {1 X
<statement sequence1>;
8 {: A2 M. G+ @. c next;: j% i% T9 i& B; p, j6 d
3中断语句# ]% z9 V6 B- X2 s9 R
waituntil <condition> prio <integer expression>;! t8 v" {1 j& k2 k; o V
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# m. P b8 k6 w7 G. C u以上为常用的函数!
# p4 ^" R# i" m还有很多,如有需要我把资料发到你邮箱里
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