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发表于 2012-11-13 08:48:12
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1判断语句- _4 [* w6 ?- W( N# ~2 L8 T
if <condition> then/ x2 O; Z% _ R# ]; W/ f. C
<statement sequence1>;
/ d2 G2 P7 k1 o) C elseif <condition> then+ c" Z8 j$ m# D. i
<statement sequence2>;* Q+ `; v q/ p2 T- ^% B
else ! C+ }3 I0 v2 D6 M
<statement sequence3>;: k2 I8 O3 K B% f, t, V) d2 l
end;
* a4 X$ \6 m: D如果分支比较多,用:1 a! E: @% n2 W; ]' K; h* e/ Q9 {
inspect <expression>+ U, \, p3 W$ \! P
when <constant_list> then
! j3 s( r3 e. q n' P3 `% g$ B <statement sequence1>;
% u# m1 T' N" K- }9 I when <constant_list> then
- L3 x8 B5 Z; f# a4 F <statement sequence2>;
) Z: ]1 P1 R: i/ E; T9 r4 Z5 {+ q% P ...
( X" F: k# g1 X( c else# S4 q* ~6 P$ Z% _5 E* I7 w" U
<statement sequence3>;' g5 c. p' g4 J; j' J$ Y) `
end;
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1 |' }$ D" M0 u2 u2循环语句
4 ]" z+ Y5 Z1 G k4 r (1) from <statement sequence1>
8 F4 e7 C3 @3 u% A until <condition> loop0 {2 O* {5 w/ P
<statement sequence2>;) f( A! |% B% K+ H9 Z" `+ {
end;
) }* b# p/ D8 q: f r (2) while <condition> loop3 y# U# \3 d# w. h4 {( u
<statement sequence1>;2 ~' I2 ~5 f. O9 O5 l4 I4 o" z
end;7 @: d# c/ x& x3 |) @. ^# @
(3) repeat . H( [* F9 n/ ]$ I' j
<statement sequence1>;# \3 n }% y! V# L, P5 L+ `
until <condition>;/ @4 r- d1 p6 y {
(4) for <condition> to <condition> loop0 S/ [! ^6 O! p) c
<statement sequence1>;
; a) z8 q# s2 b0 J next;
0 R# U- X$ K- d- G( X4 o6 X+ r' Q3中断语句& q% D7 z$ J+ Q# X- e
waituntil <condition> prio <integer expression>;
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/ B0 `* _9 J: q4 G+ m: \
以上为常用的函数!
8 Y' q% G: \8 f还有很多,如有需要我把资料发到你邮箱里 & {; p0 A* S3 x; D( z6 Z, j
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