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发表于 2012-11-13 08:48:12
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1判断语句4 E( u8 R, f9 a+ Y5 p6 w6 U; x; ?# z
if <condition> then9 B: A5 h3 U- x9 D8 R
<statement sequence1>;' M0 i; z6 N0 g2 [& ~
elseif <condition> then' Z/ u2 J5 @$ u1 g- ^
<statement sequence2>;
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<statement sequence3>;
5 i' E2 U8 G U% U& u- F/ L3 |! v end;9 u. u& `) o9 @( Z
如果分支比较多,用:
( j u7 {" _. c& Q' V. |2 F inspect <expression>
8 w3 b2 l4 f* Q when <constant_list> then7 F" v) {9 D- Y' _( [& \
<statement sequence1>;
9 V6 j+ H7 Z F* [: Z2 } when <constant_list> then
$ E* H5 v! F- G" Y) m7 w+ R( z <statement sequence2>;
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else
# ?' \* V5 |7 Q5 J3 f <statement sequence3>;
5 T. _- l, C1 L4 V5 Tend;
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2循环语句
3 H5 x" u v$ l1 F (1) from <statement sequence1>
0 N- J0 _# W4 i) z until <condition> loop
" U8 X! O2 ?/ y- L& w5 q <statement sequence2>;# _$ s+ v( E* P
end;
& L7 G1 I$ y2 P7 e) d (2) while <condition> loop! R0 m. l( z7 Q" P9 B+ o8 s
<statement sequence1>;
6 ^( r% f t y8 P: r9 F end;7 F" j, F+ U6 k0 w1 V
(3) repeat : m* A; |' Z' c Y! Z# k2 y. L
<statement sequence1>;
6 v4 E! a( n( r4 {2 w: ` until <condition>;3 u7 Z- @' B2 P6 X7 r+ c+ `
(4) for <condition> to <condition> loop5 ^' N; X ^. b) F7 p' g. G
<statement sequence1>;
+ a3 W8 i4 ?6 F/ c' u! @ next;
! ?6 X J( L; z( A3中断语句, A/ b# h) Z4 R: D/ G5 ^ N- L
waituntil <condition> prio <integer expression>; }* P5 r$ i3 B. a" m4 _0 \$ D
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2 b* k! ?+ o0 o' F1 C$ | ~以上为常用的函数!
( ]' D, C$ K& A1 n. h/ w5 `还有很多,如有需要我把资料发到你邮箱里 3 @7 ~% L& C, U* g6 F
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