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发表于 2012-11-13 08:48:12
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1判断语句
, }+ d: E# B0 }5 B if <condition> then
" k' M7 h7 b. e3 o <statement sequence1>;* ]8 W/ E6 n% |% |0 U. S
elseif <condition> then4 [# V) y' l3 Y* A2 T' z4 r0 ]
<statement sequence2>;# ~3 ?7 C) Y# r7 q; H9 T: U
else % {4 ?$ W @( J8 t* }. Q1 Y3 z
<statement sequence3>;
7 {- J- H. W( e2 P3 \ end;
! f! o- l6 H9 _: ]9 i6 U7 h如果分支比较多，用：
/ v' [8 \. V4 D. h( R0 D inspect <expression> ^: V+ ]. o3 E5 ]0 J
when <constant_list> then8 X& J5 Y: [5 L+ q
<statement sequence1>;' {/ s) o" G# P/ q# h6 {
when <constant_list> then3 S! A+ }5 k( h, F. b; n! C
<statement sequence2>;" B+ j& y/ e2 ]
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else; i2 Z* l0 o. a) E
<statement sequence3>;
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+ l: }8 l+ Z9 a, b8 p2循环语句# T) z1 e( T* g* g, `/ @, K
(1) from <statement sequence1>' ~5 P# w4 g! ]& H" T2 r0 c
until <condition> loop
, a+ s% G" g& f+ X <statement sequence2>;
7 Y: I- |7 S2 M3 A) t; F( ` end;
1 s. x/ I! N' ^, k# C8 z (2) while <condition> loop" f5 m: R0 B1 u" F$ ?* ^; c
<statement sequence1>;' y8 ` C4 _9 ?8 A
end;
+ @% X- z, _1 Z1 ? (3) repeat `% q7 _4 Q( n7 u2 H
<statement sequence1>;
- L+ m- n4 p7 \ until <condition>;+ U. K F& O9 D3 D) `& Q
(4) for <condition> to <condition> loop
( l5 i! [% O9 D2 Q; n2 F <statement sequence1>;
1 ~0 [1 i5 u7 c/ H1 A next;8 A2 j5 U$ `9 E C+ \5 a
3中断语句/ C7 v6 k6 z3 s! e. Q! X: J
waituntil <condition> prio <integer expression>;
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6 |- l9 [/ T* f" o" s以上为常用的函数！
" O( l2 \" F! h* u4 S! N( R还有很多，如有需要我把资料发到你邮箱里
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