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发表于 2012-11-13 08:48:12
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1判断语句5 N' r. f8 ?# R+ ?
if <condition> then
. o. t' y: s4 [! E* d$ K <statement sequence1>;9 n$ a) t! L& t) ]1 V( v
elseif <condition> then
/ ^0 \0 Z* d" L <statement sequence2>;
- P2 D2 i% J# q/ s0 n1 S else
7 p4 o$ N6 ^' g# C) Z5 `+ m6 K: } <statement sequence3>;: F# T0 N- f9 ]* q
end;
5 M$ y4 m. _4 X1 k0 Q7 A如果分支比较多，用：; ?* h2 }5 Y& H# O; F
inspect <expression>
6 n5 J1 _0 R' I9 O* E when <constant_list> then
, _" }1 a% G3 }% _ <statement sequence1>;
- G' A$ e* A B7 w' ~8 f when <constant_list> then
. f U& y) G7 q <statement sequence2>;3 J9 m ]9 i$ j3 R
...& R( S6 \; ?" }9 B1 v
else( z4 K1 m! N8 N! @8 k1 J+ o
<statement sequence3>;
; [+ K( I5 K) ^3 U- K6 G1 Iend;
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. `1 v0 e' }4 H r) e+ F- ~2循环语句
) t R6 T- P4 v& v# I2 | (1) from <statement sequence1>( F9 o: C. [9 Y7 f$ c) L3 l8 O
until <condition> loop/ k3 d* Q6 a# Z
<statement sequence2>;
/ F3 ~1 z+ z1 T/ A+ J6 W7 U0 J end;' _7 u8 E$ s# \$ }0 e
(2) while <condition> loop% `6 R9 D9 W/ e( i! d9 O& H+ |
<statement sequence1>;
4 W2 G$ ^& w7 k$ U$ M! W end;) w: ^. R9 n/ |
(3) repeat : {% r& a0 F( b' }' o2 W
<statement sequence1>; Q; R5 g5 W, ~# N* @" _+ j; @/ I
until <condition>;
% h2 U+ m! Q, T (4) for <condition> to <condition> loop& i7 ]9 [( `5 P% U; [
<statement sequence1>;) i) u8 m# ?$ B0 \; ?$ j# I5 e
next;) }: B ?$ Z2 N8 }% y& I- m- M
3中断语句
' q; g5 o, m) z$ m6 ]8 N waituntil <condition> prio <integer expression>;8 J1 Z8 P/ o7 ^! y9 v; s
! N4 b/ ~* d3 R/ b4 e
% D; q7 \$ ?) Z1 C6 T& X以上为常用的函数！
# T% H6 B0 n4 G还有很多，如有需要我把资料发到你邮箱里
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