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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 _! C& ^/ k' Q" \( ?) P if <condition> then
8 E- I! K. n6 k1 {# ` <statement sequence1>;8 g# M( X3 n& H2 |7 }9 n( c' K
elseif <condition> then
3 m: m5 Z" P: Y3 U. S$ n' r <statement sequence2>;$ R6 b7 ~' H- b, b3 ~
else
0 h/ B2 H/ P) {; n- c- S2 L& L <statement sequence3>;$ d) r" J* p+ V! N
end;
( Z- N( ^+ g+ ?' B/ s; h# Y* n0 I如果分支比较多，用：
" O7 C; y. F( z5 `2 ~( ]7 A& {; d. N inspect <expression>$ f% i' x7 a- c
when <constant_list> then: Z p" Q/ F, E9 S Q, ?4 H" D
<statement sequence1>;
* S( d- [: e# B when <constant_list> then
. K. ]% i5 b5 E9 E$ i! J <statement sequence2>;
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else1 w, {+ S6 R, e8 l3 D* b
<statement sequence3>;& W) Y F% ~& m0 S0 K
end;
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2循环语句5 O9 F4 K+ f% e
(1) from <statement sequence1>
' _: n7 f9 T% D& t+ z, T; G until <condition> loop& @* E* Q; B' ]0 g: k5 F
<statement sequence2>;
$ k) p4 w( @4 Z$ m2 i4 g: O end;* C6 {5 A4 _" U1 S& |9 P
(2) while <condition> loop
; C" g2 l+ f ? a4 t <statement sequence1>;
/ r' X4 b# u3 b% z* a* p end;' _( n1 @6 X+ M0 J7 C& w3 v/ X
(3) repeat / C( H1 x" ]: D6 X* Y7 o
<statement sequence1>;, N! G; D$ u# t/ z
until <condition>;- _) M0 F- J0 @3 Q6 D" \% W5 M: ]8 `9 d
(4) for <condition> to <condition> loop
$ z, a0 S, s2 [/ y* t <statement sequence1>;
" j6 U. L9 L) ~% r next;+ ]; b2 ~) G% i# u2 O% i
3中断语句
5 h6 E2 @5 R+ R0 m t waituntil <condition> prio <integer expression>;
" A; w. r* D4 E( T6 Q; ]% x: s, ?, |5 z& H! x. ?
6 O0 o' X9 k9 x* j/ }
以上为常用的函数！$ N( h/ B& e* E# K: b
还有很多，如有需要我把资料发到你邮箱里 1 ]1 ^# _, Q& N" [, v+ Y- T
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