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发表于 2012-11-13 08:48:12
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1判断语句( B* T( P$ _2 |, j& f2 m6 f9 c2 u
if <condition> then1 P2 T8 B( U7 X
<statement sequence1>;
6 c- I# ~" w E- c: O9 b7 b( g elseif <condition> then
6 H; T& b# z( k! ?# [4 Y7 z <statement sequence2>;# B9 Q; O) c& H Q1 i+ R8 ]
else : I% I+ @5 r" S6 A
<statement sequence3>;
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如果分支比较多，用：
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when <constant_list> then/ {5 J) ^( E" W' V3 p8 x- Q; }
<statement sequence1>;
! l( F b3 V; v0 ]% {" J when <constant_list> then0 ?- O' K, e/ E7 u
<statement sequence2>;" a8 O4 }; M6 G/ j1 m
.... ^5 X' l; R1 t8 P
else/ l0 U& M; q6 r2 D j& L7 n# `3 B; Z
<statement sequence3>;
h! S7 a6 ]4 X# q/ Gend;2 ^9 w% {; A/ }3 N
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2循环语句
: V8 I; S O- G (1) from <statement sequence1>
9 B) J$ w0 c9 Y6 k8 u9 u- k until <condition> loop- B! {: o8 f& r! M# ]
<statement sequence2>;0 E1 G3 w* c+ y+ K( c
end;( @' ]9 o# Y3 ^
(2) while <condition> loop( M1 v6 L! a' {5 Q
<statement sequence1>;
! _& X, {" U/ l3 T, E, q end;1 `! i- H7 `) Q% v8 w
(3) repeat 8 {* w1 b! P# k6 v. T
<statement sequence1>;
' c2 h9 R* S. B; G( D. Z* i3 M until <condition>;
( {' _0 V, T( k (4) for <condition> to <condition> loop
; N9 B% o- q8 h R" i) e <statement sequence1>;
4 F% o' I6 X6 Y: e! n next;+ K! b! h$ R3 O7 `" o# f
3中断语句
- `- x: G, [- W# H+ H6 s/ ]9 \0 u waituntil <condition> prio <integer expression>;: ?. w2 d# `- S( X
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以上为常用的函数！% W0 `+ r- @2 @- \
还有很多，如有需要我把资料发到你邮箱里
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