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发表于 2012-11-13 08:48:12
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1判断语句( a' N @ R, t4 R1 ^5 f/ g6 T' q4 N7 B
if <condition> then" C& q( `* N1 D: G3 ~
<statement sequence1>;
- W- i, [% F! r elseif <condition> then" x8 p% w1 j2 ?
<statement sequence2>;. r6 Y9 [, T& Z
else " `( j, p( {8 \, ~0 q; ]
<statement sequence3>;1 ^! @& U. H/ {- w
end;1 p' q6 w% x3 Z
如果分支比较多，用：
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when <constant_list> then
3 U2 Z( u# m' z, X& q; F <statement sequence1>;
' \) d2 H$ p: h3 H1 ]$ \ when <constant_list> then- z8 ^! ]" q- K/ R
<statement sequence2>;* a4 A# h1 n, E, M9 K9 U; |
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else
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end;
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2循环语句
# Z, _. h6 Y3 y I0 G( j (1) from <statement sequence1>
4 x4 l$ |4 H. v until <condition> loop
4 T' d3 @6 S+ l6 H <statement sequence2>;0 l0 C, P5 g7 B: |" h
end;
9 X ]( k- }$ F8 G- s' H4 C; ? (2) while <condition> loop
* f$ m }* t0 T% X" O7 r4 } ? [ <statement sequence1>;
& u* U; r# l j: h% w end;
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<statement sequence1>;! ^9 \# g2 Q+ c4 U/ J$ g
until <condition>;
6 y* O v2 D+ P4 X7 d (4) for <condition> to <condition> loop
7 N5 w: o+ b( m% ^ <statement sequence1>;
3 z h) H. z8 M/ k8 U* q% \ next;
' {0 U$ n/ g9 v- t3中断语句/ S! ]+ O, n" i# C; @
waituntil <condition> prio <integer expression>;
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, K: d2 d4 l: K! Z* e; V以上为常用的函数！+ m# f, i- }% |1 T, L6 q
还有很多，如有需要我把资料发到你邮箱里
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