|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句
+ X" w0 @/ u- @ W/ w* a( x if <condition> then. ^4 H! z. Z: u" P- P
<statement sequence1>;
; {2 f. G& ?, o7 v/ {$ G$ k5 K elseif <condition> then! ?8 h, C. _+ J3 c# s
<statement sequence2>;! C) z" s' b, o% \% X& h4 U0 V( v
else ( r! ]- C0 D0 x. T
<statement sequence3>;
, ]) a. V4 f1 e; M7 `! A end;, j7 k! l2 {: t
如果分支比较多，用：
5 q1 h) ?4 p) x" s$ ~' E inspect <expression>' Q3 p, d& r2 ]0 ?, M& Q/ ~
when <constant_list> then( v$ \) n. G4 B: ~# m$ ]. n
<statement sequence1>;
* b& Y! Y6 ~$ V) B4 G9 n, X; `6 w# Y when <constant_list> then
3 `. A3 O2 y) y <statement sequence2>;
" N2 Z: c- F4 \2 ?: c8 I( H3 g ...
) l8 ^" Q# ]8 u: P else3 G( Y: ^, O; }) N0 S4 w8 e
<statement sequence3>;/ y" q: }5 ~4 Q4 h8 @% g b; n6 D
end;+ x! Z5 @; W2 J
& G" ^2 V2 R/ S ~- g2 @ m
2循环语句: W2 H6 Q; l* _
(1) from <statement sequence1>
* I$ k$ Z7 v3 s4 \# K7 m until <condition> loop* F2 d$ p& z3 i, q5 z6 w5 T
<statement sequence2>;8 h4 H; A p2 ?. R" R
end;
( f3 J1 v: q( m. ?# d+ N! o: E (2) while <condition> loop
+ b$ x8 r& p, o) p$ Q <statement sequence1>;
, q5 S( A" T F/ o3 U end;
; |5 B, y: I8 h( ^% A. X% l) R3 l n (3) repeat & q/ m3 u/ ~/ K @$ z& l
<statement sequence1>;
/ r4 k) L9 ~$ A8 ` until <condition>;- ^- j4 R; ~7 n
(4) for <condition> to <condition> loop6 t% B0 z6 S1 W( E/ q& c
<statement sequence1>;% c" \/ F1 X D! I
next;: s& M+ b9 Q. `2 W: F, a: r
3中断语句
/ N+ H( l! E' G. W* m! F+ } waituntil <condition> prio <integer expression>;
* |/ U) M8 U% c$ @- q; s8 |
* k9 F9 N9 P9 w2 Y H7 O1 U6 ?: j' w' P, U
以上为常用的函数！
! F% n( a2 U7 s/ d4 S0 V; t* p& |# n还有很多，如有需要我把资料发到你邮箱里
( ]) j5 V7 u; {8 V. R
, B- C- ]# G5 e
! H, i3 h0 f B I
+ s- i6 L3 o u$ u4 c
+ ~4 l6 A& x/ v |) a% [) x) F
+ m$ ^! N, ^- p; U. D3 \2 J- q2 k" l8 @9 _ y+ {
0 a A7 p6 f3 n$ E. u
8 i) d/ Y, Y' _; T% W7 W% n7 A" Q6 f% \0 b
! @" Y: ?9 [& _ S2 ?7 l: a! f% O3 G
|
|
[复制链接]
