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发表于 2012-11-13 08:48:12
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1判断语句
) X, X9 T# L6 u3 q' g if <condition> then
( a! R/ R% o" o% ?2 V2 d( J, W# i2 \0 l <statement sequence1>;( S% g/ Z: D1 W( O8 u- P
elseif <condition> then8 h3 C4 E, i7 _( L4 @3 W1 r
<statement sequence2>;
4 t% {( j z' g* H% z; } else
8 M7 F7 @$ S- x1 q( p/ V <statement sequence3>;
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如果分支比较多，用：
" D R+ q! a' D& K, ~' ` inspect <expression>5 B3 t ~8 z: `1 x Z6 j) |' V
when <constant_list> then
p0 |! k. B7 F$ W# T$ A# b/ i <statement sequence1>;
8 x: K* `7 l& ~' V( ^ when <constant_list> then- z p6 z; _. @: W, Q
<statement sequence2>;
9 m% x/ D/ h q5 u ...
0 @% a/ D( t4 @9 ~! _+ m else
2 ~' }# m5 ?( q- l: Y+ a7 c d <statement sequence3>;
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9 V$ a8 I7 l5 S: L' ~2循环语句& l0 |# p% S/ w i5 F$ |( q
(1) from <statement sequence1>6 w( R: `1 k( [( x% k
until <condition> loop' N5 [5 N/ @+ K9 B3 a
<statement sequence2>;
; C( q* B4 a6 |) C3 W, z end;8 q1 E$ c; a) u+ M& D( r+ A: h1 N3 I6 e
(2) while <condition> loop- r: R3 v5 d, M
<statement sequence1>;# R6 o- ]! b' ]# P
end;; j* @$ O I4 u( R Z2 _
(3) repeat / F8 H& J4 G" N% |+ r# `
<statement sequence1>;
% K% U: A4 l& Y0 {2 r' _5 ? until <condition>;
1 O# ?* L- C0 e. U; P (4) for <condition> to <condition> loop
p% |! }7 |8 t. I$ Q( b. { <statement sequence1>;
. \/ W0 q2 B* u% @+ I next;
% J1 i7 c! T( J/ l7 C) z3中断语句$ T7 w. B5 E4 @( z W( W
waituntil <condition> prio <integer expression>;/ g( @# v, ?7 w" q
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以上为常用的函数！! v" `" {2 S8 A4 \) J. j' H
还有很多，如有需要我把资料发到你邮箱里
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