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发表于 2012-11-13 08:48:12
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1判断语句
$ q& U+ r% k3 S9 b4 H C1 y if <condition> then
' j7 {% o- {, ?( Y' ?: ? <statement sequence1>;7 }/ s+ l8 O$ h2 @/ F) D& u/ l
elseif <condition> then4 p% o- \" K. g) z
<statement sequence2>;
2 J ?) g6 B2 M5 ?5 q else
+ q1 E2 g" T, j <statement sequence3>;" u8 C9 I2 {; L) l( C% |) N8 J
end;+ t( J2 T. p* ? |
如果分支比较多，用：
0 R u& _' c- l" V6 ? inspect <expression>
3 v. T% g. S: y! _% j when <constant_list> then$ Q. i5 B2 ^& Z1 @' {$ O
<statement sequence1>;
/ J0 Y% A( o; h when <constant_list> then
& C3 X% T1 r {" ]6 Y* {' D <statement sequence2>;
8 M: c. G# J: A- i1 o" h4 }# z ...
+ C3 ^6 b# l" D" T* u) k else
k( ?6 F: A2 b/ b+ V+ V! P. Z% z <statement sequence3>;: c, [: h4 Y0 I6 ~* b! J7 [4 O
end;8 c( F3 s1 v) U9 P' N: I7 x
1 C& U. A2 M# ]" F2 _2循环语句
7 P. X. C9 |( D. f _0 \5 B }" {, w (1) from <statement sequence1>
/ Q* e. D. i: e6 n ^ until <condition> loop" X" [$ i& j& w- w2 V1 \: k
<statement sequence2>;
# ]0 X( X& t: C end;: Z/ o# |2 Y" I1 w+ A
(2) while <condition> loop5 s3 F4 V# E) `; Z& `+ X& t
<statement sequence1>;* P6 h) Z0 W) t% s8 T
end;
! v3 s' B' Q6 Z: b' P (3) repeat $ b$ w, x' n4 {5 `* @
<statement sequence1>;% J; @0 G; y2 v7 K b
until <condition>;
1 X$ M# J% y% [% l7 O0 l. }& L' U (4) for <condition> to <condition> loop/ D* |% y) ^+ K1 c9 K
<statement sequence1>;, ]5 P4 Q; F* Q9 a* X4 ~+ t
next;
& C7 Y1 H+ k- I: P" f" l" s3 J3中断语句
, m' \7 h ?6 w: X; C. S% s waituntil <condition> prio <integer expression>;/ P8 A7 A' k0 e; u8 N1 o0 \
6 E; R2 s6 x; ]- y
) H% Y4 r! d2 P0 `( D$ [以上为常用的函数！( j/ b ^! o( \
还有很多，如有需要我把资料发到你邮箱里
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, k2 ` |! f: M" u; Q3 d4 {$ s4 e" W0 z, b
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