|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句. Q" l# b7 d2 J% T% B
if <condition> then
: Y5 R- H1 s6 h! P <statement sequence1>; m0 @/ a6 z' G r, L, `
elseif <condition> then
9 c/ V% [ I8 R; p; I: m2 E# y <statement sequence2>;
" b* C- d: W/ ` ^ else
! s$ ]5 H; b1 _) y; ?( g! j* V <statement sequence3>;
* p. n& K7 l! b6 o end;, i/ k! J1 f) y# g1 p; ^
如果分支比较多,用:' K9 m/ I" L2 M: b) u
inspect <expression>
5 s, P; v8 w' B0 N) g when <constant_list> then
% W, l2 ~1 [2 J/ A7 f" k2 l- y <statement sequence1>;& x3 H8 O8 T1 B5 k# O: T
when <constant_list> then
1 F! \; J) ]' R8 P. `5 { <statement sequence2>;
8 C Y! z& M* x5 }. p ... y' A# G/ P$ g+ ^
else' n5 c5 Q: ? R' @/ A; F
<statement sequence3>;
+ h% j, c" K" s, h9 cend;/ \9 [( V9 e2 J+ G
" _. f! O, x2 h4 U E& E2 \( L2循环语句* k8 D% q( V4 `7 j% q; Y, N' P
(1) from <statement sequence1>
2 V3 P% {* q# V8 x! K2 Q. Z until <condition> loop6 T8 J; }6 {* y7 A, t
<statement sequence2>;
% S+ e: o9 j6 Y end;
1 ?4 u1 j9 z2 t/ Z& a3 e (2) while <condition> loop
w4 k1 t/ q6 ~0 x- w <statement sequence1>;; ~8 B2 n. D/ O( D- B& M4 W
end;
9 t: _6 \4 ]' i. ?- \+ J. i5 W (3) repeat + t1 t e& A4 x/ _/ n; _
<statement sequence1>;# O8 p* J: e3 g; D
until <condition>;4 F; Z6 R6 X8 s' a' N
(4) for <condition> to <condition> loop6 ~, w& O$ p+ T( v
<statement sequence1>;
9 V; ^+ D) X4 C0 ] next;
9 P4 \* H1 E Q6 B- S t3中断语句4 j/ |% f: ?; j5 y' t: }2 L" C
waituntil <condition> prio <integer expression>;( r% P4 d0 w b8 H, w( ^
" J& i7 A8 c" h. Z& X6 G9 W
) u7 Z$ L, l. k) \以上为常用的函数!
9 J* n7 L% B6 b7 [0 Z/ V还有很多,如有需要我把资料发到你邮箱里
M2 b: q t! B
/ q4 K0 @" u2 z3 |% m5 i4 o! ~4 a8 g7 _/ T% u& n: }
" A' k, ]; M" @# j0 A; _2 \
& E; g2 j% a" p7 r" D; |
5 R, R; A j D1 ]; X1 V3 D. ^' d; A
1 l! C% M+ N ~$ H- z. h/ b# W) x1 K' G7 k
! u) d% O/ u2 U# @: K# P" j @
, _4 M8 R: t% E( O3 x4 D |
|