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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
6 t V) p2 t U if <condition> then
$ F3 S, t: |. Z) y$ P9 d O" h& i6 J <statement sequence1>;% o$ t* x# P# V" B. h0 L2 M
elseif <condition> then" q9 ]6 `7 ]7 M5 v( V4 R$ S5 B
<statement sequence2>;0 X* \8 h; p. H9 }2 Q5 `9 h" E7 \) i: V* l
else
% B: W+ T' ^; G: c z' y/ M/ }1 U <statement sequence3>;
5 ~" S5 `9 p; l" Z end;; `% M y0 ?) G3 x8 j, F$ |
如果分支比较多,用:3 A2 s6 J9 I6 e" J
inspect <expression>
0 O" a9 R: D9 L, I' V. U f when <constant_list> then. x# s% t& k+ k* ` J6 S& W* y
<statement sequence1>;7 U6 x# F% H+ B1 T) M
when <constant_list> then
+ E2 w1 w. G3 h <statement sequence2>;
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else5 q0 T6 {$ D% \: O9 x
<statement sequence3>;& e. k- [: S) n9 \, |" C Q. N
end;
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2循环语句
: x7 F- ?. V* S% d# U1 b4 | (1) from <statement sequence1>
8 A) Y. y/ j) j# w3 c4 j4 m until <condition> loop+ h1 w& Y; ^- r
<statement sequence2>;/ {. m) d$ s4 e; d
end;5 z w& [% L& d1 G$ c& [: E
(2) while <condition> loop4 R8 F' J' [7 X( q I: `
<statement sequence1>;( c( Z/ w' D$ t0 D4 Y2 i9 c' n
end;
. b8 f$ O# `1 l# t# k (3) repeat % u2 ~) @# X* f. s9 m
<statement sequence1>;
' |$ U, h y: W until <condition>;* ~$ w' ?/ J1 W
(4) for <condition> to <condition> loop
L' q" Z: M" C" x <statement sequence1>;
7 H/ c3 Y$ `+ q+ }) `8 r" Z next;
' A* [5 K' a+ W3中断语句) X7 W( G0 k. @% f! z; d/ w
waituntil <condition> prio <integer expression>;% K- | \; W: n8 P" z
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( W# ^4 F% T) Y% u0 H以上为常用的函数!+ a. |' c$ Z' {7 b% v- a" K
还有很多,如有需要我把资料发到你邮箱里
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