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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句, {* w5 L# p7 w+ |
if <condition> then
s% f$ D# h2 m: k; u <statement sequence1>;( z4 E9 h! I; m0 k, b3 ] e( {
elseif <condition> then2 p8 k$ g1 O7 I/ I/ s
<statement sequence2>;7 N7 |2 F) U* A1 ?4 k9 k
else + }3 J. Q3 F: \$ {' z" ?( S! m, D8 ?3 H
<statement sequence3>;6 N% J% c! m# E* q: m5 B; E' D7 ~
end;
, y: A4 J$ k3 m; f6 D: M如果分支比较多，用：3 L1 R8 |& _ K; Y
inspect <expression>
+ t0 P m' p' g' q- J+ i: Q/ O9 R when <constant_list> then
/ F# }5 X* R) L" ]: Q- b$ W <statement sequence1>;5 o) r s( C& F) L3 s9 I+ d4 V
when <constant_list> then
5 I0 z& C, p% |. B. m* l4 Y <statement sequence2>;
$ c: L2 y! R' V; i; E" [2 @ ...
y: l+ W2 U0 [: k R. i else
" u% J+ v" N2 _# b2 ` <statement sequence3>;* M+ w8 |2 }4 I1 B
end;
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2循环语句. Y$ Q1 P8 L% q# z. J" O( m: `3 [
(1) from <statement sequence1>4 k- _) D" Z0 M& l4 P
until <condition> loop
% {( Y# j& v& ^) C$ T& D" U: W/ [' ` <statement sequence2>;4 d8 c& J X6 I
end;
! g$ ~- D. ?' H& N+ V- D$ [ (2) while <condition> loop
) u u4 v- i4 |$ h <statement sequence1>;. _) F$ \. X6 s# F) h
end;
3 e# c, N/ m! g; P+ o' g- K& V. b7 R (3) repeat ; c0 D9 M* z4 D3 ~6 f7 J: l5 `5 M
<statement sequence1>;
+ t( C- U/ [0 V/ ~( y9 q until <condition>;
! t& I7 \* O, N- J! { (4) for <condition> to <condition> loop4 c: {/ e5 L9 i3 N
<statement sequence1>;
, U$ X- g& {4 l. ^, D. C% ` next;
: A3 \% V8 M3 ^: M, t3中断语句
8 H$ U! h: l9 \0 [0 M waituntil <condition> prio <integer expression>;2 E# y ]( n P2 a, H, V$ n4 j
; h: {2 R$ k' X& l/ N$ u3 {3 W
- C" ~( {- G3 X" Q2 Q" N! h( |( M
以上为常用的函数！
X) [0 ]% y/ u! Z1 |5 F) u7 J; o还有很多，如有需要我把资料发到你邮箱里
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