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发表于 2012-11-13 08:48:12
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1判断语句
4 A4 o1 U1 |4 A: A if <condition> then( b p8 j9 X8 c
<statement sequence1>;
2 C: i" R+ m! t$ }$ k; h elseif <condition> then
; e. v1 S R/ h; H; Z# U) v* K7 n <statement sequence2>;
! I3 x: h( i5 w0 z! i/ I else & o% Q( o% U* T) L0 v$ c
<statement sequence3>;* D( T* c/ K9 C; J
end;
& d% O! g" f, i0 ~6 d$ T% [! p: Y: p如果分支比较多，用：
1 g" R5 ^7 k+ A4 F& l" _6 x c inspect <expression>9 S% y4 s9 a7 S' r; l
when <constant_list> then8 A) Z5 X+ Y! B, [4 z1 d1 u
<statement sequence1>;5 y+ R5 W- M2 b- V. M& H
when <constant_list> then3 F2 x" |: L* _: P& D7 E+ R/ a/ R& ~
<statement sequence2>;
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else
4 J' ?: T7 [5 p9 h3 Y <statement sequence3>;# n5 a- e+ }, C: r2 Q0 _% w6 d! g
end;
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# n1 V K5 d* f, `% |, Y2循环语句' w7 e- H, n* J* T
(1) from <statement sequence1>+ ] d- A( x( m. Z' F% z+ \
until <condition> loop
0 t1 a" x* P6 L+ T' ^7 @% l <statement sequence2>;5 n7 C1 {1 q9 v% b: ]; _# z
end;
3 P8 t2 \: ?3 _/ w- v* _9 r& n (2) while <condition> loop
1 c( q; z" a4 } <statement sequence1>;4 U; q4 r; k( u: a! _) w
end;. B5 p1 h- m1 h( t/ W3 L9 m% o1 [) w
(3) repeat
' f9 t3 L' c6 q9 \- e% c% y <statement sequence1>;
; O( Z8 G- ]- l2 v/ w6 \ until <condition>;
' r# G; I2 T s( e7 _+ u (4) for <condition> to <condition> loop
* z& y# `: v' X$ p5 A! l6 e$ |5 e <statement sequence1>;6 L& @5 n$ l( o/ \6 |$ r {6 o
next;
. U/ }4 q% l P% U* ~3中断语句
2 s D# I% L/ J! }3 E! N waituntil <condition> prio <integer expression>;+ c: [& y0 i1 T9 q8 h1 a
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; b! Y3 {0 p$ P) Q" P) x以上为常用的函数！( _+ [( T- m3 f! P; t- K
还有很多，如有需要我把资料发到你邮箱里 4 x3 l' Y% \ z$ X; i$ X
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