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发表于 2012-11-13 08:48:12
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1判断语句5 v& s3 ~. d" N1 w- ~' W6 H8 F
if <condition> then9 V( M8 m9 ]3 n) R+ K
<statement sequence1>;( @# i' [! O% A% X U
elseif <condition> then1 A. o. w' L6 {' R5 v' u
<statement sequence2>;
" [( W5 N' w1 r0 g+ c; \4 Z else ; C w# c' u3 A! N
<statement sequence3>;4 {9 p" {8 d; k8 M
end;
! `) U& t4 d9 C4 r. s2 R* J如果分支比较多,用:
7 e& t4 W; N: h& \* }$ \ inspect <expression>
' ^) `5 `6 R6 _ when <constant_list> then* J7 b I- `% [" d5 M" w+ X1 T$ X
<statement sequence1>;
/ P' c/ F, {# ] r: |! T! ?! X* {1 D when <constant_list> then. v6 q/ V- ]: [( F3 L
<statement sequence2>;
. ]# q8 e3 C. u. T! O ...
0 r. |9 T- O7 i; v: S& j a else
8 A, j# A& |& `1 t: A <statement sequence3>;5 q1 |% i) M7 A* `& C
end;" W6 z: w# W7 u" p
2 p# ]! o7 }3 H/ L( k) D# Y2循环语句* m8 G$ |. _' A7 H
(1) from <statement sequence1>
9 L/ m2 N0 x2 [6 \/ g$ @ until <condition> loop
1 J# }, G! Z. W, a <statement sequence2>;# z4 ?, |: D$ r2 K
end;2 q- v9 B* v* a W: A- {- i
(2) while <condition> loop
4 a: {5 W1 Y/ {& S1 q# F: e <statement sequence1>;! z% e7 ]( M' Z; g* Y" `( i
end;
! `' G5 [0 m& Z+ f2 p( j% S* B (3) repeat
; r) H, r3 r2 x <statement sequence1>;
5 ]7 c) W U! }5 n until <condition>;
0 E) ?6 R+ J) }, `9 V (4) for <condition> to <condition> loop
5 P" `$ i+ \6 S' Z S <statement sequence1>;
! K2 o: H8 W9 a7 ?. u; Y( x; Q next;
H( Q {4 l$ n0 _3中断语句
2 F6 G3 p$ B$ ~( ~6 `1 Q waituntil <condition> prio <integer expression>;
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以上为常用的函数!# X; M0 f, Z& w, I, b8 {: x
还有很多,如有需要我把资料发到你邮箱里
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