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发表于 2012-11-13 08:48:12
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1判断语句0 q" V# M- c+ v) `- J
if <condition> then
, P' e0 ]# E! v1 E6 ?. t <statement sequence1>;
3 U9 ]: N+ M; ?" f) P! N" t elseif <condition> then/ O- Y% J" z% s9 p0 N
<statement sequence2>;; ?5 I, O7 O2 A }+ H& `% K5 o4 H# K
else ) V+ z6 X: E" C3 T/ S
<statement sequence3>;
" L$ c, |3 ^! Y- R6 ] end;
$ ~9 A; H" w6 ?& [/ L6 u; q5 A, C. j! U如果分支比较多，用：
; O( W& I% {. r; W2 i0 P2 S inspect <expression>7 e' `; r$ w! @& `+ f4 X( A
when <constant_list> then1 S) U0 W7 ^% y7 m! d
<statement sequence1>;
/ c6 O& R0 B' @, z9 O6 K( c when <constant_list> then
, o" ?3 C- i1 D. U0 F( m1 t <statement sequence2>;
3 R; L, z. o% ^5 a" P ...
. J. ]+ M; q; Z4 U2 t else
4 D& h+ A' P3 F. O6 S0 Z <statement sequence3>;
2 ^2 J5 p# c2 N1 c' i% |; dend;
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2循环语句& J/ r o A% _0 Z+ f3 d
(1) from <statement sequence1>
, V3 F4 T' j( f+ @ until <condition> loop
0 b* ~! G; n, w+ E, Z5 y2 i <statement sequence2>;
6 U7 }* A8 J* Z& u h# U end;
5 C% ?. Y6 l# L" L5 V' Q9 P (2) while <condition> loop
9 x8 g. k8 e. ^8 x2 _ <statement sequence1>;
& f' E1 m( k/ Y% N end;4 ?: W" x( _, x, O! n' O: ^
(3) repeat $ \; i) t- `7 ]
<statement sequence1>;
. z5 U: f4 h. Z) j i+ \: t until <condition>;: s, |+ | s/ D; J! h4 F
(4) for <condition> to <condition> loop* v7 k3 B" R& y! I8 Q' s" o' A( T
<statement sequence1>;
" p$ Z( f. E$ ~; @ next;
. D' B5 L/ \2 y# X: c3中断语句7 C6 a, M3 `1 [
waituntil <condition> prio <integer expression>;
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以上为常用的函数！+ O5 K; B, C5 ^3 q
还有很多，如有需要我把资料发到你邮箱里 . r6 t5 U* ?: G3 s; U1 v* n
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