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发表于 2012-11-13 08:48:12
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1判断语句 c. G: @! j. |1 `, t- X& V
if <condition> then
7 s* T4 G, ?, b/ J- ~$ j/ L <statement sequence1>;: ]5 n9 S9 k3 {. d& D. l
elseif <condition> then
% E% y4 W9 q/ H4 p; ?1 o9 C6 p <statement sequence2>;
) T0 S) K9 m" ^3 k else
9 ?9 U0 X' ?6 @; p9 c# t <statement sequence3>;
, [0 O' L, J7 j* z5 _- u end;1 g& U+ k9 H. ?/ x; v
如果分支比较多，用：
0 P9 y% C2 [- G; \! k/ t: R inspect <expression>
0 `) d. _2 [( e( m8 g$ {, I when <constant_list> then, |0 k# ]3 i. d7 n0 _- p9 P, N! ]
<statement sequence1>;. o6 i5 u' Q6 \ F; c! Z7 y
when <constant_list> then+ g Z5 U9 ?9 ?/ Q+ j5 q
<statement sequence2>;
' b- x6 y/ C2 v7 R/ [ ...
2 I; o! B- h5 I I2 G3 V else
/ B" W8 g; r" v$ u1 a. ~ <statement sequence3>; `7 F) g; `: v! d- G
end;
2 O. N/ d/ C; h2 |8 |) K7 `' V( y+ W+ x& p& c3 q% M
2循环语句! e' E3 `0 |1 A& e/ T* u- O
(1) from <statement sequence1>
% n, W6 y- b/ _& }1 `: R- S0 Z8 D until <condition> loop
& V1 V, U% u ~8 Y$ S! e( Y( \ <statement sequence2>;7 X- [4 _/ ~2 ~
end;
: p7 l* v+ O8 F: G3 h1 F (2) while <condition> loop
3 ~! X. t% v3 t5 x2 w, b <statement sequence1>;
" [5 x" N3 K& a, m end;8 J6 O1 O$ H8 U# J1 Q6 O
(3) repeat * q" ]- Q$ K! Y7 C6 c* c
<statement sequence1>;
4 {! D$ Y ]" Z& R until <condition>;, X6 g O# A; M/ l" {: r* m& q
(4) for <condition> to <condition> loop1 I4 y1 B* E+ ^- D \) B& I, Q2 ^
<statement sequence1>;
9 m! D+ O" m N+ S1 o$ B+ X next;
! S2 Q* u b) b V. m5 n4 g1 M3中断语句
0 I7 Z! B/ d X, `- A, Z waituntil <condition> prio <integer expression>;( t: f8 o% j- f) A& ~) b
! a9 f! l0 X9 u! Q* O; |; w, {# W+ Y% q4 d) O) K$ o& w* a8 F
以上为常用的函数！9 N. a' u( }1 J
还有很多，如有需要我把资料发到你邮箱里 2 q2 x- W) I: V) x: n. e
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