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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
9 w# O5 v* m1 z( n3 V0 N" ]- l if <condition> then
& s' k: \, S: o <statement sequence1>;
8 t v' A+ {. a( R( Q elseif <condition> then
3 \) p: t/ R: N& { O+ i8 y! W <statement sequence2>;
! j, w w1 v- k7 |* M else
# ?" H# k6 Q* u3 }% n. C) v <statement sequence3>;
; |( W0 I* P1 I: r6 T end;& F# M* w4 y b3 u3 \- f: U/ ~
如果分支比较多,用:
# ^* r6 {6 W3 X( o. M! m9 y# O5 \' ~- k inspect <expression>
+ G9 N1 m+ \5 y when <constant_list> then% N3 i, e. T$ Q& ]9 v9 f. r
<statement sequence1>;: ~; W& K* _: D: y! }
when <constant_list> then
; m% Z4 v( t. p$ ?1 f6 _: X9 x <statement sequence2>;# Q; l9 [# ^/ d+ R6 C, t9 G
...& G5 V; F6 r1 y% C
else
0 `3 u7 T' q8 Z: d! `& \ <statement sequence3>;
2 k; i- g7 i* y+ c" m/ l0 Q2 Mend;
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2循环语句' b+ j8 A# p+ c2 {6 t% c
(1) from <statement sequence1>
* y, D7 Q# G; C) {& w until <condition> loop
, T" @+ l& p3 Z! m6 c% A <statement sequence2>;
5 p2 f4 e4 m x% A9 M- h end;
$ N! `: j5 F( H. k3 B (2) while <condition> loop1 q: V3 a. X4 `1 C e% x: z; ^0 d) [
<statement sequence1>;& V0 c3 R+ u% p# \) o7 q
end;
# |3 j) Y, j. r& _7 h5 y (3) repeat
( \- O% M2 g# W0 L u <statement sequence1>;/ @5 u* r6 S6 |3 I
until <condition>;
! s' p; x- F. Q( b" W: r5 C* c: @ (4) for <condition> to <condition> loop: m8 B7 J* L) z& a8 D: x
<statement sequence1>;
) o$ T! U. C2 [/ y next;) G/ H% ~1 t j; n% x
3中断语句
- F6 a3 \% E! r' l waituntil <condition> prio <integer expression>;; D) {0 S) M1 t# R' k) B
b' r/ H! R& K2 L; ~ `
' B$ h5 y! ]$ P6 e以上为常用的函数!7 ?4 k5 U2 x: h' ^
还有很多,如有需要我把资料发到你邮箱里 5 v y0 T; X8 B5 v0 v* X8 r& R
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