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发表于 2012-11-13 08:48:12
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1判断语句( \. q: G M9 j8 Y8 a8 u
if <condition> then1 b# X' A; s: V) N
<statement sequence1>;3 Z/ r9 t' w8 w$ M" f
elseif <condition> then
. | A3 [8 h; c& e1 C: r/ m <statement sequence2>;6 g% C" G C4 |( L
else ; A$ W( A5 ]7 {
<statement sequence3>;
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如果分支比较多，用：
& ^% r4 J" B5 l# U$ I5 h inspect <expression>$ k7 S' T8 i+ S
when <constant_list> then' E+ u8 \: b6 o
<statement sequence1>;
# r/ V3 o5 s& j, x when <constant_list> then
?: j2 h8 a( F: Q2 X5 E* @ <statement sequence2>;9 D. B9 K# x- y+ C- N
...
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<statement sequence3>;
2 e2 E! o' J7 ]1 d i1 x% v. ^end;
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3 I q& ?- J& @8 |5 F( l# i0 F2循环语句
5 x+ j) d3 ^ l4 r' o, G( w- K$ } (1) from <statement sequence1>
& Y' P% C. r1 C until <condition> loop+ V. |, e0 \% |" X
<statement sequence2>;
G- V7 F* @; z9 }$ i end;
3 q% X7 K9 W3 Z. d2 {7 } (2) while <condition> loop R+ M' b. ~( d
<statement sequence1>;2 i4 S% Y& M) D* `/ ^
end;( N8 s& a2 }. [" n
(3) repeat
6 ~4 p5 F: P; h/ t! u5 {+ | <statement sequence1>;
0 P: M, e, t0 S% k until <condition>;
( A$ Q: @- W @( Q" R (4) for <condition> to <condition> loop
/ `6 I4 }7 z9 Y4 ^$ _7 ? <statement sequence1>;
4 k8 E0 T: J5 P4 D next;
' I- n$ P2 @) \ `0 ^3中断语句; I4 Z, R9 _% M& E! s5 F8 ?
waituntil <condition> prio <integer expression>;, L' i; r4 m. y; n8 `
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以上为常用的函数！5 D- f! g( H4 n2 u- {
还有很多，如有需要我把资料发到你邮箱里 , B) ]" H) M' {/ P8 R8 D; z* Y3 j$ J
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