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发表于 2012-11-13 08:48:12
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1判断语句0 h+ R2 Y$ V8 e2 S
if <condition> then7 L; T/ x$ i) N% b6 |
<statement sequence1>;
$ X! i* K( n3 Q. p elseif <condition> then
4 D7 Z g; ?. J: D <statement sequence2>;$ s$ @2 x; ^' \& s% b
else
* H; ^+ n& \4 @- Y3 ~! v2 [: @' ? <statement sequence3>;
* `1 {% [+ l3 d K7 N4 ? end;7 C; ?' ?) J8 U( G/ W! I/ U
如果分支比较多，用：
6 ?" z! P9 R7 D. z4 e! T inspect <expression>
3 U7 ~& R3 }/ P# G, T when <constant_list> then$ v$ x) Y# F8 U
<statement sequence1>;
% }9 U! I2 @ l5 G1 K when <constant_list> then
- d. r7 e5 `5 _$ b. f5 m <statement sequence2>;
7 d% Y& P+ y2 O- z0 K ...
# ]' S7 H2 y3 g' L else
9 B( D7 p0 D( U# H6 j5 \ <statement sequence3>;
6 u8 k1 o6 ?8 L( a5 X3 }end;
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% I, @' ~/ G3 _$ K2 F6 I2循环语句# B3 I2 b. `- |/ l1 }# Z
(1) from <statement sequence1>( \; k$ C$ {0 @( ~5 [2 m5 s7 _
until <condition> loop4 l9 Y5 B8 _, J c" S {7 H
<statement sequence2>;) a7 c }( U& D6 z* J. V1 |
end;1 P5 e' ]: z' { x
(2) while <condition> loop
% ^$ e0 R! \" v* C8 w, V* s <statement sequence1>;, n) R' F1 N# t. ?. w
end;
: Z$ s2 a% [; x, e4 N! F' P% K6 Q (3) repeat
+ N# _ `- M! u% [ <statement sequence1>;
- b1 X! \/ L' Y until <condition>;" g5 i0 \+ F% {/ o
(4) for <condition> to <condition> loop
6 ^7 ^7 I9 v4 a+ {4 s3 c <statement sequence1>;# R9 Y: @( H5 S
next;* @7 g2 ]; ~9 D% a2 L% n: z
3中断语句
( N: i- u) ?5 \7 |) z: _ waituntil <condition> prio <integer expression>;
- o- ?, x' S0 e6 V% m2 v9 |: N. n4 P# w- \% U' g
: f: q2 m6 v8 u- y# E以上为常用的函数！; l: d" C" a2 g# `$ M7 ^% O
还有很多，如有需要我把资料发到你邮箱里 2 T/ m* t5 p3 d" U4 x
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