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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
|; G+ x) Z: s if <condition> then) j! l, k6 |- A. Q. ~' I: A* L& t R
<statement sequence1>;
/ }1 W/ m H% I2 t- u) F elseif <condition> then8 ^2 u# v. |6 H( z9 |2 @
<statement sequence2>;
! O: e& {$ \) W6 W4 g0 L else
5 C1 m3 z: a2 H) { <statement sequence3>;5 K) M% C2 S' _4 r
end;
/ x% q' e2 O; y/ m) q _' n/ }8 J如果分支比较多，用：
: {( ]) K( H+ `, P) Y4 ^+ f# U" n inspect <expression>
5 O2 h0 v+ X' C- w" ~4 D when <constant_list> then
. c1 ?6 Q0 T6 L% @ <statement sequence1>;5 Z& U) ]$ E* S+ d- \. ]
when <constant_list> then. V% H. M! t b, X
<statement sequence2>;
) p: ~9 i" Q4 o/ x ...
6 e) I4 ~2 w. q, j, U- g, Z+ W else
5 ~+ g/ y1 n& i' a! i) h$ s <statement sequence3>; e) J& i/ q" F* \& _3 o+ F
end;
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5 W0 Q' i) ~; [ _. A+ U: V5 s2循环语句* c# b2 j# z# l8 m# A# f
(1) from <statement sequence1>
; b* B2 o0 Q$ b" D: n: e until <condition> loop! m& ?6 U, C2 B, |* J- C
<statement sequence2>;' \! l6 x1 S8 W2 E5 I, |
end;, _- O! B6 b# [6 `
(2) while <condition> loop
9 F: a2 x2 ]$ y/ R( p# h0 G5 H <statement sequence1>;; X% l; P# Q( Q# Q
end;
Y& ]- t" _7 r/ w- H6 v (3) repeat
6 r# _ R2 y: p5 X% G <statement sequence1>;. V4 n/ [4 \% v; `
until <condition>;
9 `$ [+ e" D: |, F( p3 A (4) for <condition> to <condition> loop7 Z3 |2 R! }5 W* y( T$ n
<statement sequence1>;. Y2 g8 d& L% w* V, A6 }% {
next;- \0 c+ g: C7 u7 A; d
3中断语句
! y, Q% t. a) m% N* |3 c/ F( f waituntil <condition> prio <integer expression>;
, x9 X+ }8 w* ]% A2 m: Y. Q' M0 D }
; |) G3 M( p/ E0 x) p+ N/ X以上为常用的函数！
7 L1 U* y8 b: o, x# g, p还有很多，如有需要我把资料发到你邮箱里
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