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发表于 2012-11-13 08:48:12
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1判断语句4 D& N/ x" m, ?% P8 H3 m; g0 E: F; s
if <condition> then# S! i; Q4 c% t' w" C% }% a# G
<statement sequence1>;- Q( Z5 f. }& q5 Y, g# z
elseif <condition> then- a' I( h; P: r$ a; S0 ~' |
<statement sequence2>;# l1 c: e/ p: D8 F1 |
else * Y; f3 b+ \$ t% U
<statement sequence3>;% b2 X( |1 X1 T F: {, v
end;+ @; Y$ f) j7 h
如果分支比较多，用：% j% K( Z8 @7 B
inspect <expression>
" i2 F4 f! `+ n+ y) I! Z* ?1 ] when <constant_list> then1 p" G4 A# f, F9 t+ M r- J: U
<statement sequence1>;
N/ {# @- T' L9 {. m. ?. U when <constant_list> then
9 E6 y8 p" s2 ~, v <statement sequence2>;' N6 G, l" Z( ~( d
...# X: B. c6 |' ^& W/ v
else6 ^+ O+ s- x$ Q& d
<statement sequence3>;
" O& |$ c9 @) q6 I1 s; Aend;
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0 v' v/ c1 U8 ?' _' M2循环语句
4 G2 h/ r5 O5 Q. k/ T& i2 V7 Z (1) from <statement sequence1>7 J9 V8 G$ \0 X
until <condition> loop+ Y& B/ Z* G. \. J7 B9 A, e$ l
<statement sequence2>;
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(2) while <condition> loop3 c: l5 q: l4 w' q G6 `
<statement sequence1>;
$ @1 ~2 S& i5 R- r5 e9 M: O end;& b& k" v3 o* u, M/ {* o; r
(3) repeat , Q7 E/ t2 R: s' t
<statement sequence1>;
" z. U- E: N& q2 S6 |% [ until <condition>;
. x3 t/ L" `4 s8 i (4) for <condition> to <condition> loop
2 Y' J( ?& {! k: J <statement sequence1>;
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3中断语句! U& h* P( i r, Y
waituntil <condition> prio <integer expression>;
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以上为常用的函数！5 V/ I& ?$ V6 X1 W- K) v
还有很多，如有需要我把资料发到你邮箱里 % Y& P1 k$ n2 h3 {
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