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发表于 2012-11-13 08:48:12
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1判断语句
: K7 _4 r) E0 a: E if <condition> then
6 B) h: P! D( n! [6 C4 J <statement sequence1>;
4 Z- _' L+ n6 K6 D$ M& ` e3 D& ] elseif <condition> then
* A+ u* F+ r& t3 N6 a <statement sequence2>;
+ C/ r& I. U0 I8 z2 Y8 N" U else ; F6 ?& R/ {. {; A, R4 S! V- M: o
<statement sequence3>;: _4 R$ o1 M( V; m6 f
end;" V1 d) R' e0 o% P
如果分支比较多，用：$ u6 s) q% k/ Y& N
inspect <expression>
$ ?7 w9 d& O& @/ j, c+ w$ C when <constant_list> then
, c" k+ r+ ?; m- F+ r <statement sequence1>;
( W M5 U% w% e- h3 O% g when <constant_list> then
+ W- X$ B$ b* [ z <statement sequence2>;9 `, n1 _+ F+ Q
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else
+ U$ ?! R+ ^1 F# |2 a <statement sequence3>;
% X9 D* q$ ~7 w F9 A) iend;
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: q4 a9 U" `% s) ^0 g2循环语句
& d x* r( W" l7 B2 C$ O* R (1) from <statement sequence1>
, l# P. j G5 B3 ]2 ?, @ until <condition> loop
`5 L z3 D5 e <statement sequence2>;8 I4 s1 \/ _+ i2 n
end;
- {/ E# _7 U& I& a (2) while <condition> loop
- {9 G" _ S# W" h: n1 P$ _ <statement sequence1>;! J* a* b8 x: O( }# h1 \/ R2 V- ~) u
end;
% q3 u/ b! V& A8 z1 u- k/ Z% P! f (3) repeat & w6 ^ s0 t! a
<statement sequence1>;4 Y0 |$ K6 L! U/ |: B2 B
until <condition>;
$ W4 z4 {( r/ S7 r+ c0 K: y (4) for <condition> to <condition> loop
5 X4 t; e& _0 `! A <statement sequence1>;# e$ G' {4 p/ {5 w
next;
2 U; r% F/ L+ m& i* O s3中断语句
2 y2 j' b9 w7 ]+ ^- p+ Q! p8 ^% G waituntil <condition> prio <integer expression>;
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以上为常用的函数！
$ U0 h% U1 Z, h* B还有很多，如有需要我把资料发到你邮箱里
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