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发表于 2012-11-13 08:48:12
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1判断语句
5 V' f9 |/ Y5 ~8 @. j if <condition> then% |* U G k( s% D
<statement sequence1>;
. N. u" h% H" Z* C8 E3 V$ R8 B/ u elseif <condition> then
( s% c1 q& B' `; G" t <statement sequence2>;
6 V0 f! x1 X3 I! A, w* i9 x8 @" } else
3 _0 f& l. ^; }! d | <statement sequence3>;8 t! n2 e9 H+ l: ?' x
end;
7 x# k6 h: E* y/ O1 y9 T如果分支比较多，用：
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when <constant_list> then2 u* c: c& E5 q9 `2 |
<statement sequence1>;. D+ ?5 [- l7 M
when <constant_list> then
3 ~; C4 M5 n- W4 b7 E4 P) l <statement sequence2>;' A. Z) u8 F- H* x# W
..., G1 O3 T/ C4 k
else
; y+ U4 Y1 |, E# Y( ?: D) W- y- x <statement sequence3>;/ h2 D6 q* c1 A
end;
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2循环语句: g( Y1 K1 N% e: S1 `1 J Y2 O
(1) from <statement sequence1>7 `/ \5 d0 C4 c% n# U
until <condition> loop
7 k, x- K+ q$ I; T$ s5 N% B! Z- Y* N <statement sequence2>;
& l. w) W. H+ z1 ]$ v# y1 d; _4 ] end;8 U. _7 U1 G3 H1 F
(2) while <condition> loop. n2 ^: i, S: \
<statement sequence1>;
9 y; y2 N: n) I W end;
3 L- B0 ^, [* B5 W& C+ \ (3) repeat
8 ~+ W, B3 p) c2 J( R! E <statement sequence1>;' K9 P8 b8 |# @$ T5 u
until <condition>;
+ X8 }* C/ c: P4 S (4) for <condition> to <condition> loop
/ I! \* p! P+ B* K X9 O <statement sequence1>;7 z, V8 m: }" i) X0 R; {3 [2 w. B
next;5 ?: N% X5 p" u6 u6 B3 D: y
3中断语句% m2 a; d4 ^- @6 s' r
waituntil <condition> prio <integer expression>;
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) p1 t) u+ G5 a以上为常用的函数！2 h! K8 E! A7 g. h0 } N
还有很多，如有需要我把资料发到你邮箱里
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