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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4 X9 z8 D2 `$ _. {) F
if <condition> then, T5 s# F1 I) s: l: J
<statement sequence1>;$ R7 Y4 `3 h/ p% |/ T1 Y
elseif <condition> then
0 c4 t9 A. Y: [ <statement sequence2>;
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<statement sequence3>;
7 e. q$ u- I+ E6 E6 J end;' ~( _7 j, b+ u8 K8 T
如果分支比较多,用:/ _; {& g. J( }
inspect <expression>/ p* \8 G9 k& v; p |1 c
when <constant_list> then1 Q+ e. n* M3 E. Y$ g# n
<statement sequence1>;# d7 u0 `8 q( O
when <constant_list> then
0 i& i5 G' o! A. ~/ r" g <statement sequence2>;# w z% J( k: F! b1 [6 a$ Y
...
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<statement sequence3>;
( }0 n1 R) P8 A) F! V" A( Dend;
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$ @$ i6 \) E' |3 K2循环语句
# Q. L2 h+ b6 O# ^- Z (1) from <statement sequence1>3 k1 _4 j, L* E4 p# j
until <condition> loop6 _# w1 r+ C7 p! ~
<statement sequence2>;; b0 a! c# `7 i$ C
end;! |2 B9 k, K' j' ]2 {1 U
(2) while <condition> loop0 J0 n- [7 }! ]/ u
<statement sequence1>;0 W' O% F! ~, K- g
end;
! T" Q+ e+ u% O- U (3) repeat $ G% A; }' H' {& l! T" k
<statement sequence1>;1 {5 }& _6 v% d- h& J3 v5 @
until <condition>;
3 e) \5 ~2 \0 T3 T# u (4) for <condition> to <condition> loop
+ W- y- L0 E: L, R3 T <statement sequence1>;+ z/ x, S! c3 s$ P/ S* f
next;8 D* s0 X& c9 p8 E8 y7 t0 @1 N9 U
3中断语句
7 ^; P+ s2 ]6 C; P waituntil <condition> prio <integer expression>;, N5 C1 n0 W7 {0 X! E+ L" h1 z# X
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以上为常用的函数!3 o( l/ W8 A% j/ N
还有很多,如有需要我把资料发到你邮箱里 - w1 q0 \! y! _ {; ?, Z5 ^
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