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发表于 2012-11-13 08:48:12
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1判断语句
3 X# }+ M& r5 K3 h) H if <condition> then
& C' @3 l4 u) c* R) G' k <statement sequence1>;
) A1 D" s# R; c2 I elseif <condition> then. o6 n- c1 B; H ]( }8 V
<statement sequence2>;; ^9 J/ l- K8 _( |3 m. f
else
& k7 Q9 Z5 k# R$ I7 [/ u! b3 k <statement sequence3>;
2 _+ Z) H, J, j5 j* J end;
p7 z& c* ]. u1 z/ f6 t如果分支比较多，用：
* f* J3 D9 F- D$ P. J, C inspect <expression>
: s6 X! g- Q1 g2 O3 U/ O when <constant_list> then
1 k* p8 N3 a% G7 _$ N <statement sequence1>;
7 G) M$ J, C3 X) S. N6 v when <constant_list> then
* n* g% P; A( s! k9 a1 {8 P! Y <statement sequence2>;
9 ^: A( X2 y! b+ S' ^& p ...
* P2 K% Z8 z6 f; T( i4 i3 g else' i5 K: `( I9 _8 C2 A
<statement sequence3>;
4 q3 q( u3 t$ Eend;: W7 ~; x2 c: a6 x$ y# S
2 B/ m+ |3 z6 o! d3 O. `- v2循环语句
% ~* d/ L, b6 V" [! e (1) from <statement sequence1>5 s) h. q9 Y$ K! w! O6 W
until <condition> loop( p( B$ U, S, |! {/ i) b& ~
<statement sequence2>;
4 Z& D: Q+ ~, H! r- M end;6 {) [' k1 b) J0 U1 u M' @9 K, Z
(2) while <condition> loop
8 a9 E' g/ S1 y. e \ <statement sequence1>;) j& a+ M* t3 a4 A! f9 i* f
end;
; F' Z3 b: y3 A! k' f; l0 G" ?# [ (3) repeat
% W R {8 T, l4 Q2 O# x <statement sequence1>;/ |9 u ^ j9 M. @% d% M* f
until <condition>;+ Q- C% Y$ y5 Y% l8 e2 C h1 v5 @8 g
(4) for <condition> to <condition> loop. {% ?$ w# L8 n5 `* {' h5 ~
<statement sequence1>;
/ e6 ^& v6 S5 X next;
1 d: o! a- N. r1 S6 ~4 q/ X3中断语句
" v. k( L u% y waituntil <condition> prio <integer expression>;8 X( |" z h- P6 U" @9 Z* G# D
/ S. l! k" `' M- g- C& C+ }
1 q3 B3 \0 I: Q8 j
以上为常用的函数！$ u# h% Z. g. E' c
还有很多，如有需要我把资料发到你邮箱里
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