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发表于 2012-11-13 08:48:12
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1判断语句$ s, O7 c9 \7 b/ {% P+ Q# v
if <condition> then
) _+ b) M! j# c \, m- z1 w, y <statement sequence1>;
& Q% r5 X' f3 Y' @2 H elseif <condition> then
* S: `% `% L' h, x) t <statement sequence2>;
# ?: @/ r; a9 w else
9 r) g( }/ U, J* z <statement sequence3>;
2 j3 c6 V5 H% w' S6 D end;
, l1 N( S0 V6 ?) M/ _$ ]如果分支比较多，用：
" N. w0 D9 ~( q# ~* C8 t. D% ` inspect <expression>
( }" ]: z2 w! l+ a1 Q when <constant_list> then4 _% p6 e9 D) C* w6 ~
<statement sequence1>;: N( y# `1 _- _! r
when <constant_list> then3 h: C! r' w' O
<statement sequence2>;9 v9 z2 V/ a5 i7 M; _' S# D
...6 W, s- ^( ]$ I+ `/ x# s5 w
else# M5 ^& Q. V k% r: x
<statement sequence3>;0 ^' S8 M3 F( Y
end;$ Q0 U. Y0 D" I- s" K8 {
3 Q# C% |8 w& Z6 {2 V, p8 m
2循环语句/ y$ n7 ^5 v. _( T
(1) from <statement sequence1>& a8 Z. r! s4 H4 y. a
until <condition> loop
6 y8 b; x$ h# n/ _3 y <statement sequence2>;9 f: H6 d" U' x
end;
7 b! ?: @/ a1 x* n! L( _ (2) while <condition> loop
$ w _5 s# }. q; i9 x* E5 C4 x <statement sequence1>;/ Z; L. I8 y; {; g
end;
, U9 C- @0 Q: R (3) repeat
* l3 S- J. }4 N0 R <statement sequence1>;
9 y7 ?) A L$ | l, s until <condition>;
. a0 V1 l- e/ ^$ G, K (4) for <condition> to <condition> loop- }# S" e& \" m, Z/ ~: f" t
<statement sequence1>;
% N* t1 E+ O3 s6 N8 C3 \ next;* I, H3 e7 z0 A; @, r
3中断语句
7 R# b& i9 Y# `& o$ X8 E waituntil <condition> prio <integer expression>;8 ]1 p8 s1 M* k# F' D
S+ k+ n. k2 c; N1 {' Y, m
: K; h+ M ]( Q. ?以上为常用的函数！
* Q( w# L0 x) X" N! k$ Y& C还有很多，如有需要我把资料发到你邮箱里 . `9 W, P# I7 d+ R+ m
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