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发表于 2012-11-13 08:48:12
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1判断语句
4 f0 w. e( F" C3 z& p if <condition> then
8 m" j* V4 B( ]4 A+ F <statement sequence1>;) R* K9 X# x5 r6 r' j2 W. |6 E B
elseif <condition> then6 }2 q5 Q, r1 v6 |+ M
<statement sequence2>;
6 a6 [+ L. r. i7 D# j/ H else
. M1 F% K* N! ^* b, Q7 a& k0 Q! b <statement sequence3>;
( `, V$ ^, o9 g3 m7 D end;
! ]) S. k. A+ A9 p. m& r' t# v如果分支比较多，用：
- ~# R' M3 y( e1 I2 f m4 E$ Q: q9 R inspect <expression>
% b: M$ K! A6 {. I. Y* S; b when <constant_list> then
" v$ t. w5 B }: @ <statement sequence1>;
+ W& _! x1 U# b when <constant_list> then
; E9 c* t: H* F( }$ U2 ~ <statement sequence2>;5 u2 y1 l& R% A/ C
...
" P0 Y6 z0 U; \6 D+ \8 A else
) @+ z5 k) n6 w' ]7 h3 ?) l <statement sequence3>;
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& x0 X4 i, d, N0 u% b! i2循环语句, }; o5 `& a( P5 a9 x* u
(1) from <statement sequence1>
2 G# `: |# R( M( L# X3 G: w4 D! `- S% c until <condition> loop
3 R- @8 i8 L+ o6 |% s3 _+ ]9 F& m/ C <statement sequence2>;4 d' `2 f' |. S( m( M& U+ m
end;
1 Y7 O8 i2 i$ ?: O% i* x5 E. X; W (2) while <condition> loop1 |6 P- E; o* z: J
<statement sequence1>;
. h& c- r3 t/ Q end;9 H% }% O( ?0 j3 r* R/ y4 H5 w
(3) repeat & L' ]; U. a4 W! l
<statement sequence1>;
/ R; |7 a* r, F% f* M until <condition>;8 j& s2 J! n: J; A& A+ Y
(4) for <condition> to <condition> loop
' p/ C+ i4 @9 u% | <statement sequence1>;2 H: } w5 Q4 a/ [5 y/ V' p- J
next;
5 }5 e/ z$ ]$ N5 z+ T3中断语句
* E6 k# s! w1 \; w3 W$ E2 U9 O, j waituntil <condition> prio <integer expression>;
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4 a; @5 z/ B2 ]+ {& Z: V* q i以上为常用的函数！
% W; D! ~" i" H还有很多，如有需要我把资料发到你邮箱里 ! r; @$ w9 o( b) Z
# t- a7 x: F) ]
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