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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
2 I# K) b4 V5 b& c6 z5 {* V if <condition> then
% ~1 e% }; E, e& U <statement sequence1>;
; Q" D2 v6 i, v elseif <condition> then
& g8 J3 y0 F: D3 \9 Z% j <statement sequence2>;& K+ q/ \. x: O) X3 e# X4 C9 U
else 4 O% ^+ Y4 R/ K6 N
<statement sequence3>;8 Y4 g3 C4 F& a4 r
end;
N- V6 w1 d/ o F如果分支比较多，用：
- Z, m! ? y7 ]) T* \+ r1 n: x V inspect <expression>+ Y6 j( k, a; r
when <constant_list> then Z D. \8 l" g' G/ c
<statement sequence1>;
& J$ E1 k) {/ q+ ]& i% T when <constant_list> then
: a, b3 l! [; D! c% t <statement sequence2>;! L# t5 q8 e+ ~! d x- h w
...
/ p+ _8 b2 h$ t$ _2 v$ A( l2 z else
$ R) e, b" [8 k; ] <statement sequence3>;# e& h' P1 h' M8 P7 y/ ]9 I& e+ l Z
end;5 \7 x! k6 U$ I/ `9 e" M
) x& r5 a7 B" e- V! ^7 g- _2 y9 ^2循环语句+ t' f, U+ T. j3 {, x( c5 l
(1) from <statement sequence1>" W% F3 {( |3 X. x2 `( z7 i' T& X: C
until <condition> loop0 }+ F2 g. F/ }) X! O; B
<statement sequence2>;
" E% P( k. M7 X) } end;2 {: H& n* A, j" X5 Y
(2) while <condition> loop7 x" C! J* ^4 o' m: k+ {& l! I
<statement sequence1>;
3 B0 i9 X# t0 o. L. [3 m: W; r end;
% D$ A4 V0 \" Y# ` (3) repeat
1 v+ g* O8 p. l <statement sequence1>;
# ?8 p; G. O) p9 {9 f8 a until <condition>;
+ N- t4 B& K3 v/ [9 {5 ^& j) d, \" G (4) for <condition> to <condition> loop& n& P9 I! K$ H b# K: s) C
<statement sequence1>;9 p( u& d3 J$ {4 R8 a
next;
8 f2 \5 X; I. O3中断语句
8 \* r2 e- |" \& C; ^# Q* d waituntil <condition> prio <integer expression>;
8 w& G6 f+ \% @" B5 ~3 T3 \
4 |3 E6 J7 Q g9 p7 X
# _6 L1 O6 A& |5 D5 r以上为常用的函数！$ Z3 \* s/ ^0 @& h- a# F5 Y
还有很多，如有需要我把资料发到你邮箱里 . R$ I( [& Z) i, f5 y% } o
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