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发表于 2012-11-13 08:48:12
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1判断语句
4 z7 T1 J- k" ] if <condition> then. Q' H K2 H9 L/ `: n1 Q
<statement sequence1>;% m/ G! ^! a4 l, u5 h: Y4 r
elseif <condition> then% p# \: J$ T- J8 e7 _3 e+ W3 t
<statement sequence2>;" @ K9 S/ q; c& @4 o4 N/ t
else
& r, j, d7 `4 k! Z <statement sequence3>;, m: |0 b" x. A" ^; ~% Q4 J- r& q4 l, d
end;
" M0 C0 ?9 g8 n4 Q6 U! H# A如果分支比较多，用：& N7 u/ m! O! H# a& q9 Z
inspect <expression>
: U9 J: |! S- U" L, R; v! S* p when <constant_list> then1 {; o4 j. M. C+ g# S
<statement sequence1>;
; p! }3 N+ }/ h1 Y0 B9 S when <constant_list> then2 w$ ?2 G3 \$ e' F9 v
<statement sequence2>;7 u' ~; E2 c% b) M2 L; G+ H) f
...& l1 @& s/ ]- D2 E' o2 e
else
# H; V, v1 m6 R u9 W! z8 K$ c <statement sequence3>;3 a$ Y/ ?( L$ `/ ]) W
end;8 l W- D* {1 c! ~+ P
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2循环语句6 u! l7 \5 D( z: x$ c0 m4 g8 c8 \/ a! W
(1) from <statement sequence1>
' b! r! A- V/ x/ r$ L until <condition> loop
4 W- j0 z) u. {/ F. O$ m3 Q <statement sequence2>;
! q& |4 h0 i7 }4 q, h1 i6 R7 a3 E end;
* N: \2 z1 ?& O' J1 K9 z: m+ z. @5 k0 | (2) while <condition> loop
D% I- {4 g9 {: b: m& \ <statement sequence1>;
% S1 i, ^( ~& N X. g& l; \" C end;' S) w# y8 }$ G2 Y! U
(3) repeat
! ~" E2 C& k# h. I, l3 h <statement sequence1>;( j0 A F( B& o7 c# n3 E4 x
until <condition>;
2 n% U% w! U( U I3 d (4) for <condition> to <condition> loop
& \$ U: L5 |; g- [2 U <statement sequence1>;$ J' C# w- o+ |& A A4 I2 w
next;) L9 f" D% X v6 e4 _
3中断语句
( I! D/ V! D2 A' ^, K waituntil <condition> prio <integer expression>;4 E ?; Z: O: i
1 r* C" N5 U1 u4 w, L
7 B9 X( j0 K6 a以上为常用的函数！, g$ {3 W& H8 y; i+ D4 y
还有很多，如有需要我把资料发到你邮箱里 * e7 r, [- g( T3 v
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