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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
6 }" W% y" Y7 L; N1 O# m if <condition> then
/ d2 b' {7 P# q# \- z$ c <statement sequence1>;5 q& b |( J: f
elseif <condition> then
% `2 W% Z b. D/ s4 k8 H6 J/ o, Z <statement sequence2>;
1 y1 e( Q5 ^0 X! u7 d else 9 o2 R& L" G. A. V4 V- j' ?" ]9 @
<statement sequence3>;" w _! O w/ f8 A, z& }# Q+ P) {
end;) w, |& \' |0 H* J3 _
如果分支比较多,用:+ d9 J( t$ k, r! J& y: ?0 p- N% s
inspect <expression># p a) v, C6 A' a* R$ {6 Q
when <constant_list> then5 h) x1 ^4 ]; w% o& `
<statement sequence1>;: o* v- E( ]1 R9 Z/ S+ ~
when <constant_list> then# D6 C; e( t/ g" W6 D: x
<statement sequence2>;/ e6 n. n# W3 }# V( q
...
; ?" ~# y+ {, Q- L8 g else
h* h2 f& V; A9 e1 t <statement sequence3>;1 e/ s) O& e3 m6 k( v4 R8 g
end; W/ D# ]$ a3 n0 m# e3 z2 r6 g
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2循环语句$ i/ q! a$ I) A M7 i
(1) from <statement sequence1>( J8 n" x* ]7 ]
until <condition> loop
. B0 U/ s" m, ^ P" p <statement sequence2>;6 N1 Y0 Z4 v$ {) b
end;
- a3 r+ f& ?5 q1 a (2) while <condition> loop" n; z3 b+ a2 U1 x0 l& k
<statement sequence1>;
1 z' u Y6 p( P' Q end;
, w- ^9 U7 x$ x8 _0 z (3) repeat
3 C5 d* L$ g/ i- P <statement sequence1>;& W. N) c( x' c; i# z
until <condition>;# K' F8 _' p/ e) }8 L6 u, J4 g+ ]
(4) for <condition> to <condition> loop
, n9 V/ g6 U) _* c, E <statement sequence1>;. c6 Z* `( a+ v
next;& c* F e5 d) J5 a! E( Y
3中断语句
8 ~- s0 M' m; Y; Q/ t# V waituntil <condition> prio <integer expression>;
7 f( C! c% v/ I# G9 F. X5 _4 `% P0 ?- e% Y" Q7 j7 ]
$ z/ _) m, v7 B2 H4 m5 y以上为常用的函数!* d8 n [; w8 z+ E& s/ ?
还有很多,如有需要我把资料发到你邮箱里 ; O0 t. b* v2 G7 c% J3 ]2 X, I
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