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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
* e5 t! t; v2 o$ V+ x* q if <condition> then: o7 f7 e4 y" b: ~# D
<statement sequence1>;0 K9 J! P6 a, |4 W$ C+ o% I
elseif <condition> then
2 F9 B* t, k6 U8 X- A <statement sequence2>;
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<statement sequence3>;
% L. T$ |; S' O6 j+ A( X$ i end;
6 W" g6 q3 h/ d" y$ ]如果分支比较多，用：: m2 L1 E3 I" v+ s" w! I) M, ]
inspect <expression>7 j. H& i3 D$ S ?/ R
when <constant_list> then
* s: p# b' _7 d6 C- e% i( o' `5 {" R <statement sequence1>;4 a8 Q8 F {0 B' X" [
when <constant_list> then
( w" }" {6 L3 r3 X$ B- [' k <statement sequence2>;
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else
$ X9 F3 z" C# |. c5 Z$ n3 z, j <statement sequence3>;
! v% s- _* b' }+ Yend;1 {& T0 {9 H' R" N6 C' M
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2循环语句
! u9 B: G% y3 h: \ (1) from <statement sequence1>- J0 e) [& i; n& S% P( }
until <condition> loop. @$ h9 B' t9 C4 X
<statement sequence2>;
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(2) while <condition> loop; x6 l$ Q/ U0 `* t
<statement sequence1>;+ P9 A$ D: _' P# }4 f. j
end;
3 b4 t3 V2 l; G' Q n (3) repeat c( i! }0 L: ^; U) C
<statement sequence1>;
* P. n) }% a0 B8 d" G until <condition>;* D% {0 G! W+ _ l8 I
(4) for <condition> to <condition> loop
+ J4 P7 }: y1 A( l, m( |; ]' R <statement sequence1>;! l' l8 p) V6 Y7 Q. i# u
next;
8 J! s0 H: S% r# Y9 q; e/ c/ R, g3中断语句* D7 C) t8 e7 m
waituntil <condition> prio <integer expression>;
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以上为常用的函数！
0 Z' c* l3 @ h) H2 G$ U8 ?还有很多，如有需要我把资料发到你邮箱里 7 _$ m3 S9 h- Y1 c" U; k7 t* W
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