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发表于 2012-11-13 08:48:12
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1判断语句
# q5 ?( s8 [0 |( n! l* t* M if <condition> then0 H7 `: U/ F$ g1 Z) G( g. r
<statement sequence1>;
3 `+ N+ g: l' v5 ]$ y elseif <condition> then( J. f( P/ _7 d& d; _
<statement sequence2>;* [9 `" [1 s6 |! U
else % q+ z v5 g& f* {* T3 p- Y
<statement sequence3>;
' k2 S$ @( C$ C4 N2 f. V& }3 k end;
/ g' x2 `0 Q6 C* ?: D如果分支比较多，用：
8 R6 D: H! ^0 w% _# n. p" Y inspect <expression>
) T' N: Z* H; I+ n# I0 a when <constant_list> then2 ~: c7 L+ Z2 E
<statement sequence1>;" m- ]3 h& s1 k$ V. u7 G+ a
when <constant_list> then3 H. U+ `$ Y V1 j1 z$ H! c
<statement sequence2>;
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else
& Z/ M( H2 e1 w% Z% m5 L6 r3 \ <statement sequence3>;
0 |! C( L; Q4 _6 }end;" g6 c, C L0 f* N* K2 ]. s, R
: h: I; x* w" @- |4 s5 M' G5 g8 Y+ H2循环语句
. R$ v+ ~; ]$ p (1) from <statement sequence1>) U5 i2 }( l; Q4 _ n0 W
until <condition> loop- P0 `0 C. O# a0 a0 O
<statement sequence2>;
7 Q [9 m" Z9 q/ ]: y- V/ }( y end;
( h6 m1 C! F- J! M; S0 a* ^ (2) while <condition> loop
# W& n7 v1 N6 o <statement sequence1>;
2 m: L8 j9 P0 F0 E2 \ end;2 m9 f# T6 F, Q$ z |( R( `+ \
(3) repeat ' W9 v* f$ S0 ?3 V
<statement sequence1>;% R2 n/ a1 J' d- q1 K
until <condition>;3 M% h$ b+ i6 C2 M& d0 e
(4) for <condition> to <condition> loop: E0 e& z# L3 R u+ K. n
<statement sequence1>;2 d2 v" \) v2 J) q8 ~/ A. V% y
next;
9 [' F1 |: x6 y B3中断语句
' @; k h X# d. [# K3 N9 m, B waituntil <condition> prio <integer expression>;2 w) w1 q1 ]. Y
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- w- y! N. F; \: H以上为常用的函数！
4 C E- l `7 w( }6 r' A还有很多，如有需要我把资料发到你邮箱里
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