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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
; P: c9 D& L, r' N4 }7 u4 ~, h+ l if <condition> then
v" Z" _" I, X5 X# a9 v( r! { <statement sequence1>;
* P9 K+ }( E7 H( i7 c elseif <condition> then
3 k+ P8 s1 l$ |: l, @ <statement sequence2>;1 ~5 v0 v' |( D7 p) }$ @& o
else . @( c$ T7 C9 M
<statement sequence3>;
' s+ m/ y' |; ]" ?3 S end;6 i' P5 s/ a1 K5 Q, s/ o9 f+ E
如果分支比较多，用：
9 M2 b8 D) t5 n; M1 }# C inspect <expression>
* c" q6 W4 `4 a4 A) L# l1 ^ when <constant_list> then
4 g" E% g& Z' ^* R# u; } <statement sequence1>;
# p, e8 m% Z B# w% N6 D5 U when <constant_list> then
: P2 Z4 o0 X8 N- O: [# t4 ` <statement sequence2>;( b. u3 q8 S `9 l2 R, ~9 h
...* q+ x7 g1 a5 O: `- [, h* a
else
! g' J/ I f+ q2 {1 O$ b3 q6 K <statement sequence3>;9 N; J8 P! h6 i4 L9 n
end;
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2循环语句
1 c& l$ t0 g" ?' h; [- K- z (1) from <statement sequence1>& t0 i/ o a$ Q* C/ |/ Q
until <condition> loop9 B4 r+ s0 K) N3 h3 }# ?! z
<statement sequence2>;
9 r0 x+ v" R/ A2 H! i$ A/ t end;* M$ b' m' d* b% j
(2) while <condition> loop
% c" a+ f% g4 \& D, _; i7 W1 } <statement sequence1>;
9 n8 A/ {4 ?7 V end;% v8 h" L' e, W: B
(3) repeat
; }3 S3 a8 h( B8 A- h <statement sequence1>;% ]+ S/ E/ x) ]/ ?$ ?4 H6 |2 H
until <condition>;
/ i/ j* \: a0 R (4) for <condition> to <condition> loop
6 w! _5 w6 R% O, n <statement sequence1>;
& W+ M2 |1 h! X* x& u/ z L4 M2 i next;/ A- R- e% x0 [6 r
3中断语句
, P5 Q0 a, ~7 Y* m waituntil <condition> prio <integer expression>;
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以上为常用的函数！
; A0 m1 e7 s: H还有很多，如有需要我把资料发到你邮箱里 & q' p, K1 I3 S) r) Y$ f) l
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