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发表于 2012-11-13 08:48:12
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1判断语句- Z- ^& a/ X2 v# ], L( O% y
if <condition> then& {2 K- T* J3 D. B! a- N. e
<statement sequence1>;
# X% y. m$ f0 H! k: z/ u elseif <condition> then
- J& ?6 ]: h+ M# ]( i0 A7 \ <statement sequence2>;
: Q. x& [0 Y% V3 s, c c else
2 ~* L, z3 \8 m" N7 v; E <statement sequence3>;
# X6 s$ f7 y% n" i end;' W4 w0 o1 _$ I. ?$ k+ s1 y) M
如果分支比较多，用：% k- ]' H+ i$ t- @( r* H
inspect <expression>
% ~& S/ M9 U' P5 n' n, c m* E' [ when <constant_list> then3 k. ^2 o- j1 c9 w8 j
<statement sequence1>;
, l! L2 h, O$ U2 s; ?: J8 r) Y when <constant_list> then0 t+ k' r# p4 T* {0 J
<statement sequence2>;
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else
( ~; C6 e6 A3 j# A6 A) |" V( ^ <statement sequence3>;) }7 R7 s) T( _- W: v* W, m
end;
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* K% M5 l% H8 w1 ~/ E2循环语句
' H! K' E/ y- K' t% k* j: l4 Y (1) from <statement sequence1>
# F; Q0 w4 e* F until <condition> loop
, J9 {3 D! J) L, D6 X, @$ W" @ <statement sequence2>;
# C! |$ L4 ?4 e! X end;
1 m& l7 ^4 r6 \2 c; A (2) while <condition> loop6 q' }7 {( v( m. O5 d5 }' Q& T
<statement sequence1>;1 q' d0 l8 ~$ n. _$ `: |
end;
! t. [' R6 |6 Z! D. ? (3) repeat
2 s8 m8 _+ M2 V- _3 g1 f% R* P; b <statement sequence1>;
0 w/ [; N2 U( `, l1 h+ j* i# j! f0 M until <condition>;# W$ B& S C6 s; U. K% x6 Q
(4) for <condition> to <condition> loop
% G# M V( B! `0 C- S <statement sequence1>;
+ X# |! V1 A/ m; X! s: N2 ] Y next; M8 t0 o: n3 K" b' g! f" b# w
3中断语句/ W, V3 o9 c3 l$ K
waituntil <condition> prio <integer expression>;
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) w& Z( F$ v8 p0 C0 t! z以上为常用的函数！, d% j, {# H- [/ l
还有很多，如有需要我把资料发到你邮箱里 " A2 q. S$ N% M5 C# F+ T% ?
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