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发表于 2012-11-13 08:48:12
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1判断语句
( d: I# ~$ P: t O, H if <condition> then
' `; _- Q8 Q- b3 T" A& u( d9 K( c2 u <statement sequence1>;9 a0 H: p( |, z. x& r1 h
elseif <condition> then# _7 W0 u" A: S+ ~5 H! t" I/ a: T
<statement sequence2>;$ O8 R, K" ^$ ~0 O* w% l0 \
else 3 A% ]% [& G/ t [3 D" A' P. x
<statement sequence3>;
6 X+ x$ v# j& O5 _- p end;
+ M" k1 F% R/ y0 f* E5 n4 z& \如果分支比较多，用：$ K, {, s6 U* x0 X) l
inspect <expression>5 A+ T1 u: {* y: _, ~& u) ]9 ]5 n" \
when <constant_list> then6 x, m+ e- l3 `' g
<statement sequence1>;& y0 M( G+ K$ @& p5 N! H3 j" c$ i6 b
when <constant_list> then0 T& K1 \) H, O* V
<statement sequence2>;
0 z9 x6 x- n4 J( V, I2 @3 c# B0 \ ...4 @$ S9 T7 E4 u/ ?! R' w; F
else
/ B- i1 A9 `$ R2 w) S$ e <statement sequence3>;' M; ?8 ]1 N; K( W% j# j7 I2 m
end;
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8 x- u( U- [' U2 H* \" u- g0 B2循环语句5 d, Z# G2 I( K6 g
(1) from <statement sequence1>
% ^- B& `$ r" R6 o until <condition> loop& F% R# y( [$ h
<statement sequence2>;
" J2 J3 D. g6 u! ~ end;
; d+ z6 E N/ h8 c5 `5 A/ b( @ (2) while <condition> loop
$ \+ a) N7 Q! E$ ~6 Y! D <statement sequence1>;: X0 Y; ~: W" O* w# h# \
end;
. e& t0 s0 A: X6 p* C2 z) _ (3) repeat 7 h' V" x. X1 f1 i
<statement sequence1>;
9 D! v8 L6 m6 p f until <condition>;' B* n J; }& Y: Z0 p5 ^
(4) for <condition> to <condition> loop
; _" G @+ i, a& {- T <statement sequence1>;
7 P( g/ ]; ~% a+ I% |' r% ^, b! J next;
; C/ D! Z( f8 z* p ]4 o6 p# l' L' g3中断语句) j3 F7 u1 c% F( @
waituntil <condition> prio <integer expression>;9 p$ m6 z/ d" w; ^' g' a- E
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以上为常用的函数！
( U4 S0 R1 B/ r还有很多，如有需要我把资料发到你邮箱里 P ?3 m8 W9 h* @
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