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发表于 2012-11-13 08:48:12
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1判断语句& }2 q9 h2 h& i( ]8 G- F$ n" K' j2 U' @
if <condition> then+ N; ^1 \9 e3 }6 ~2 B+ I' X+ H# e
<statement sequence1>;; u; M/ w+ Y% b1 h
elseif <condition> then
4 V; j) }9 y5 R3 l- q+ P+ q <statement sequence2>;% M+ t/ q1 n+ I! g" V4 t
else + W" U7 b6 s4 T( Q% g8 C8 f: L7 E
<statement sequence3>;# N( I$ t8 e) o8 o% F$ q1 X
end;
' A8 v& ]9 g. Q$ K如果分支比较多，用：
1 Z7 \1 H; \( q8 I. Y9 { inspect <expression>/ \# m& F$ C3 Z( O3 G3 k6 \4 y* X' [
when <constant_list> then" W6 k$ y( r# E% K6 N8 w% e
<statement sequence1>;8 T {1 p" N* |# ~( F( z' w
when <constant_list> then0 m" _; o4 u S5 B2 }
<statement sequence2>;% v* _1 P8 j% [3 A" _2 a3 j8 t- K
...
: s: h; S6 B2 L7 U: j1 s+ x/ B else
8 I- {0 z7 s& m; N @- f, h <statement sequence3>;
8 [( G" l7 R3 {4 \, R. {end;
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2循环语句" X$ |9 V+ ^8 H/ n0 o- K
(1) from <statement sequence1>
6 b3 f6 F, T( i( {* v/ _5 n& @% ^ until <condition> loop5 I' ?' F" v, E
<statement sequence2>;
) @1 T$ B7 k6 S) U% ~$ ` end;
7 ?. \: B& u. J6 P( ^! t (2) while <condition> loop
3 N4 {: b4 f! g/ ]) X1 y <statement sequence1>;' G% ]1 n3 V. M. c
end;
7 h6 S+ B0 M7 e* U3 r (3) repeat & G' W. O# W% k R1 T
<statement sequence1>;9 X7 u+ P6 J3 o0 H* i2 ]1 _7 u0 S
until <condition>;0 `8 W$ X& Y8 Q3 e8 M
(4) for <condition> to <condition> loop1 M* A+ Q: q- l; l4 x
<statement sequence1>;. v, h0 M% }# S m
next;
0 j5 l' W$ O/ q) c R2 h- s3中断语句6 |. e% I/ f7 U5 K/ u4 T* i
waituntil <condition> prio <integer expression>;9 E# B8 B; |, ~! J0 T& J
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以上为常用的函数！
) k6 O9 b$ `$ F+ i4 H7 w还有很多，如有需要我把资料发到你邮箱里
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