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发表于 2012-11-13 08:48:12
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1判断语句
% ^# `+ L$ X$ a' L7 `6 { if <condition> then
9 r) I/ ]+ o' j5 _& Q N o <statement sequence1>;7 H& g. N0 H4 k* u
elseif <condition> then* x4 a" F1 y1 b/ C
<statement sequence2>;
; S6 Z: U4 b5 z else
8 F3 v/ V8 j6 \ <statement sequence3>;
6 H- V) l% K! W2 Y& ?( a end;
% j6 [2 w, |6 W- q" A如果分支比较多，用：
! Q: @8 Z4 {3 o inspect <expression>
' I0 ^8 q4 r7 _7 H when <constant_list> then
& E1 V# v; C# _9 R& X8 K% [ <statement sequence1>;$ @- Y0 i; P' n. M4 ^
when <constant_list> then9 U9 m+ |: k9 n9 X3 F" D0 m
<statement sequence2>;
v0 D; F" j8 c ...
. o) u' m+ l9 h% l else
; D+ v! k& Z' V: Y( |8 ^8 d9 [ <statement sequence3>;
8 R/ a( \' ^( F6 D. I) Dend;3 e" C& r+ d( ~5 r; W# ]
5 T. l- }0 g4 C; l+ }( d2循环语句, N% f1 h3 @8 i! y3 w( D% Y
(1) from <statement sequence1>% @9 v1 x; E3 ]6 H3 n* b
until <condition> loop a$ }5 A {( ~& Q( E. `2 U
<statement sequence2>;
8 |8 e" \0 A0 @ end;$ i2 @" c" }* ~) U; x6 h9 E
(2) while <condition> loop4 d# ?) k- `" j) n, X3 U
<statement sequence1>;# Y+ b) F- S) |7 ]
end;1 |% `. l' V& d% j
(3) repeat / N% R% c g, U2 `' o
<statement sequence1>;0 p: s& `9 C4 W; R, M8 ~* p% t
until <condition>;
8 S' \5 f H; ~9 m$ L4 Y (4) for <condition> to <condition> loop
" ~3 b! \3 O' s8 G <statement sequence1>;
# D3 ]$ \* d3 {% X- U" ?% \* h next;
& A. z1 F. S8 J+ P3中断语句) n' \7 ^! S" b Y9 u6 W
waituntil <condition> prio <integer expression>; D# J2 ~* ?* b
+ H- _+ G- @/ ~3 `5 U, l& V: P: F/ J* M/ F; s
以上为常用的函数！
( g+ L4 d3 u- V: F还有很多，如有需要我把资料发到你邮箱里
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