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发表于 2012-11-13 08:48:12
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1判断语句
/ G' q6 u1 c: ]) z: c8 U if <condition> then3 e5 x4 @3 \$ U5 |; u! ^! r
<statement sequence1>;
/ i8 L0 W8 B; B elseif <condition> then/ K0 U$ @0 q0 B& {& M
<statement sequence2>;
3 e$ d- d9 y7 l: R0 l else
5 |$ Q4 \ J6 e) Q! u3 p2 } <statement sequence3>;9 q9 K6 @9 o" [" {1 T# J, h/ m- F& o
end;
: @" M9 k" U; f$ ?+ M, n如果分支比较多，用：
7 Z* N: Z( [: B2 O inspect <expression>
1 p- g1 Z0 W6 c0 \1 G when <constant_list> then- H' Y1 c7 J8 j& F
<statement sequence1>;! B7 {: X! X/ n
when <constant_list> then! o1 L( Z; x6 Y7 q
<statement sequence2>;4 |0 F1 G1 [/ I' D: Y
.... t2 Q, _5 H% Z7 X( u8 E6 ]
else7 K2 g: d8 u- q2 r% [
<statement sequence3>;
; {+ M. s4 E/ A0 V$ cend;
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2循环语句- W! e( j3 ~; C
(1) from <statement sequence1>- b8 u# d8 @& J4 F
until <condition> loop
- H" u. c4 @1 q) V' k' U& p <statement sequence2>;1 r0 t( L0 ~, P9 z9 }8 i b
end;5 t8 ^2 p8 e2 S) W' I; \8 p$ }
(2) while <condition> loop
5 T8 j G& V8 o* B0 T, Q8 i <statement sequence1>;) U: g/ b" Z8 Z- s2 \7 X* K1 }
end;
. X- n4 g* H" V; o9 Z (3) repeat
* Q4 L! v; t+ _: a4 C <statement sequence1>;
3 f; d0 w) }% L) ~' _4 I until <condition>;$ l$ O% N4 Y0 P5 I' `" ]4 P2 f* k
(4) for <condition> to <condition> loop
2 j9 s' v& N* x8 `0 ` <statement sequence1>;1 d6 O/ ~. _0 i; `6 n* m5 ]
next;
D5 M1 a! X3 t5 ^( @3中断语句
* U. [# w$ ]; K7 f. W6 Z8 b waituntil <condition> prio <integer expression>;
( B8 c/ f0 U4 Z+ ^- ~: V' L& k: M, ^! {. i' \
5 `7 P) y* c: F* h7 w. j6 K以上为常用的函数！
9 I7 H8 m1 w5 j8 L( M9 T3 Q还有很多，如有需要我把资料发到你邮箱里 / m* A H& }$ I6 @1 z9 b% p
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