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发表于 2012-11-13 08:48:12
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1判断语句% H. H) t1 V& \0 `/ Z, K* i ?
if <condition> then
5 p3 i) c3 d1 L* }7 S <statement sequence1>;
3 U1 g1 S6 ?1 v' V; [ _ elseif <condition> then! }6 J) [0 w/ I7 r5 J: D: U
<statement sequence2>;8 C; l2 y% J+ A- ?6 y( L$ Y
else 9 O/ {# \" K4 z% ?, d
<statement sequence3>;
1 w* I8 S* Z' i) q# |2 ]" t end;
7 O5 q3 j1 g0 G# ^0 i7 v如果分支比较多，用：
4 a4 o# L4 V0 E. X# j- ~1 j inspect <expression>
$ x' }5 B& G& U# N) T when <constant_list> then
( `- a+ X- ?( a# B- `) f4 z <statement sequence1>;
5 W3 n$ j: q8 D% Z; \( L when <constant_list> then1 p+ ~& y/ s" }
<statement sequence2>;
; r3 B' H; ^9 w ...
+ F+ V7 ]$ U. ~ else
" ~' G M5 \ J/ U) F+ c <statement sequence3>;+ n- n6 I0 m" i1 W+ v. ?7 e! A
end;* ^ O# ^) n t" n0 [) v" P! s! `
) @( v4 s6 I: F" E0 }* s: R' ?5 D, Q T2循环语句# j' w4 u2 M- f; c. }' d- E( K5 t
(1) from <statement sequence1>
+ `) }& t4 U, j1 X4 a until <condition> loop+ @4 l% d& m. A
<statement sequence2>;
3 T" K) \' M, O$ J9 \ end;
- }0 ^# n+ A7 j. o- k5 x P (2) while <condition> loop' v, A7 J9 I; h9 ?
<statement sequence1>; x" ?/ ~8 K" v( B! x& \
end;5 R' z a- h1 [2 Z% B" y! P+ M
(3) repeat
$ f" O2 {2 n# ?+ B' C ?/ U <statement sequence1>;
: w. m F" C! _- T until <condition>;
l0 J" S# N% D! d* C7 W8 q r (4) for <condition> to <condition> loop" |' ]* n# o; f8 ?
<statement sequence1>;
/ z5 v, f9 m4 W1 P next;
! o" E# _, J7 U3中断语句
% k& w: ]9 b% Y9 N, _7 N waituntil <condition> prio <integer expression>;
' Z" Y* m+ e' V- `) o+ t7 }) Y9 i+ ~( g; v3 N& \! ? W# \, l
2 a* _( n( h9 c0 H( D% v以上为常用的函数！
! r# C7 W7 S9 n4 D2 ~9 x$ _; G- f; z还有很多，如有需要我把资料发到你邮箱里 # u$ a5 r2 x0 B4 R7 |# s
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