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发表于 2012-11-13 08:48:12
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1判断语句" B9 ^% u1 @, Y: z/ _! q
if <condition> then. b( g* M+ `1 h) I7 I3 p+ |8 S
<statement sequence1>;
& q: h/ X E2 b1 b elseif <condition> then
/ {+ [# w: C J5 \4 L <statement sequence2>;; X4 ^8 s7 k- l' z
else
5 J% n( _* w u) H6 R! W <statement sequence3>;6 J/ F3 x6 \3 A) {. D
end;& u! j% t- c! z. U2 `5 H2 o, ^5 Y
如果分支比较多，用：* d' |& K, U; R
inspect <expression>" M" N+ J" J- x+ l% e6 h6 B
when <constant_list> then' @7 y, j* O7 X a* m& @, d
<statement sequence1>;) ~4 w. ]5 J- ^& H& e
when <constant_list> then
. M5 `, _, }8 }* H& F1 a <statement sequence2>;
; [/ p! X) h: K8 n# E2 I' H ...
) R* ^0 D* b9 M% z/ q+ l% w: y! B else. {4 h% m4 o5 P0 b: l# r- C( j
<statement sequence3>;. d) l( o+ s& I( e
end;* o8 o' q+ o) K5 u3 U
0 b. u# \! e: T2循环语句# b+ ^0 X7 n3 w8 H6 c
(1) from <statement sequence1>, w1 K1 ^ O3 V% |# U6 r
until <condition> loop
" `0 N2 Y# @& e7 w" e; q <statement sequence2>;. B' F+ v, n( F# \0 Z4 g
end;
& ?: v6 S2 O5 k' B2 r* E8 }, | (2) while <condition> loop
" a* k. s& c" q0 A8 H <statement sequence1>;/ A& L3 D C2 {! D
end;: w4 ]* a& n* M% R' @0 F3 t
(3) repeat 8 q4 B# z B3 b5 w9 m% J& t
<statement sequence1>;
! R3 b% O. K4 q _1 h6 T$ h until <condition>;
* L5 t% d' ]% j: I# k b9 I (4) for <condition> to <condition> loop9 P( V& h" ^- ]/ H8 k
<statement sequence1>;
2 t8 n% ~! f. S5 t( m) |" | next;
3 y Y0 l, d; ~' a$ u( e3中断语句
0 ]3 d6 a6 u7 x# h% y waituntil <condition> prio <integer expression>;& R2 Y4 S8 o3 @/ }5 Z$ [2 _
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以上为常用的函数！9 y) R c/ l; I4 h- k% T; b9 X0 @' K
还有很多，如有需要我把资料发到你邮箱里 5 g2 i( q# }' P7 N" p. S
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