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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
) C5 k3 N8 ?5 p7 ] if <condition> then
" V! r3 b2 D5 E' q' G+ S! m <statement sequence1>;
! t3 l' a1 a1 D elseif <condition> then
9 Z+ ?% w) ?# N' U2 J @) W <statement sequence2>;
1 ^7 F7 Q7 Y" I% u else
. Y0 T* s9 C6 y( j# e' k3 q <statement sequence3>;. s2 L3 g4 c2 S$ L( W4 z
end;# f, X9 h" a# l: d
如果分支比较多，用：
& ~3 j3 `) k% v3 g% C6 W( i: C inspect <expression>
% u' O& K6 t$ ~ when <constant_list> then) x# m/ \3 {; e
<statement sequence1>;" b: T$ M# A) o# w/ p
when <constant_list> then( S$ E* y7 G$ ]" f4 A* K/ H4 D
<statement sequence2>;) w3 S0 v/ p8 E! V9 s e
...9 j- P( D, m' Y2 ~2 v5 i2 {
else
3 M3 z4 ?* V5 i9 Z5 c7 w9 W <statement sequence3>;
+ G( n( |/ U" H. z* X0 P0 Uend;8 Z, _/ `$ B& \5 X
4 k z' F. { E5 b- j- g j/ I
2循环语句: y1 u3 O8 w* B/ d( u) r
(1) from <statement sequence1>2 S0 n, F/ k" U
until <condition> loop. L, ` l, h1 d" S1 D8 C3 D7 I0 g
<statement sequence2>;
5 l! z2 O B+ g4 R: t% e/ Y end;6 c& T" K5 J. x |! x8 |! E. Y0 g
(2) while <condition> loop6 c. o0 ^5 r0 {. \" i0 l3 u' ]) {
<statement sequence1>;
+ [2 s2 y* x9 h9 z) R end;' Z9 }6 T" M( U0 g: H
(3) repeat
5 g( c# S6 K! x- k+ l2 Y/ r$ \1 u <statement sequence1>;
1 E- J8 \; v4 ~' i3 l; t- I6 U4 {& @ until <condition>;- U- G( [6 W! y, i; ~( W6 C. C
(4) for <condition> to <condition> loop
+ Z8 p6 P: Q& n5 D& N% l <statement sequence1>;
8 e5 z: y$ \0 y/ X: S* D6 S0 C next;8 M- D; ~% f; I3 m
3中断语句
) h4 K4 B% I! X1 p/ r' Y waituntil <condition> prio <integer expression>;% ?- [. H+ |% D% A0 w
5 g) r. t" v9 E4 u. x: s
9 w/ A. U4 u8 p$ H以上为常用的函数！* D2 v3 ~( J" @, J
还有很多，如有需要我把资料发到你邮箱里
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