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发表于 2012-11-13 08:48:12
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1判断语句
- P9 c3 }5 R% m7 e. Z- C if <condition> then
) M' ~4 \& L& C. o6 [ <statement sequence1>;
% Y6 A9 l7 L+ U+ }/ {4 b A elseif <condition> then6 S0 W; }/ _9 m
<statement sequence2>;2 V; w) Y& n4 m* P I* I8 q
else : \$ Z, g l) Z
<statement sequence3>;
2 Z# l6 e7 U! {: l+ Q( v+ B6 a, \ end;7 o3 H( S7 Y% c. r" f8 x
如果分支比较多，用：
4 x X' q8 A, S8 n inspect <expression>
4 s- A/ I+ _0 V when <constant_list> then* P/ y0 F, T6 r8 k# ^2 ^4 S
<statement sequence1>;( g9 D8 x1 i# B
when <constant_list> then7 v% G1 K+ p; M. @- g
<statement sequence2>;& c3 M% D, B5 l7 ^, o4 ]5 j
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else# Z. z7 t" ~" L# x- @, N0 Z3 Z: L
<statement sequence3>;
; v- m: C* M! ~: B% u0 z6 S& Oend;
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/ P" O. O/ f9 l1 `6 u3 _' y2循环语句5 W5 Q1 V2 R/ ^) ]- ~
(1) from <statement sequence1>( G1 ?/ N; \8 X" q9 w
until <condition> loop' e" E/ s9 M8 \ C8 R1 ]; g. M
<statement sequence2>;
4 R1 G- V4 R/ l# _ end;
7 O( X0 D( i' Z3 @ (2) while <condition> loop
; u7 T5 e% E' c; y <statement sequence1>;
9 O4 e7 h# [- ^- I' m; C end;# x1 r( I% n! o" b
(3) repeat
5 o$ ^% y, c X; l/ i9 \8 _# _" s <statement sequence1>;7 D- Q0 c+ C7 Z# n2 ^3 G" G5 e
until <condition>;- W9 C M$ C! x& Q& `
(4) for <condition> to <condition> loop
" I- U4 w5 ~8 e3 m <statement sequence1>;6 ]! b3 o! v( H* ]
next;
0 N5 Y9 ~, o* c( o @* I0 @3中断语句
2 Q9 c' L& B) Q3 D waituntil <condition> prio <integer expression>;
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+ N, f+ O' B- X+ Y以上为常用的函数！* }( ] v* n3 R7 o7 t/ U/ n
还有很多，如有需要我把资料发到你邮箱里 & x2 L- u) u0 e1 J L. z
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