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发表于 2012-11-13 08:48:12
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1判断语句8 p, b" X) _. u1 p
if <condition> then4 j9 D) K* G) j; T. o7 V
<statement sequence1>;
& N/ ~' x/ x- c. ], ? elseif <condition> then1 v% R7 D1 R& G+ m) G
<statement sequence2>;" }' J/ S, S- n I( y
else
( n7 p; j4 i6 h0 R8 D' W. L <statement sequence3>;1 z: @" D( C" f6 b7 }2 o2 `
end;* L1 ], `( v) L. T$ Z
如果分支比较多，用：- G% d; ~# O6 w5 e
inspect <expression>* _. I5 ]9 b! i0 J' e. Q1 `: w- D
when <constant_list> then1 \( O* q6 q; c. F3 p
<statement sequence1>;
; e; A N: [( R, G, E( V4 A4 b when <constant_list> then
' P# y: {8 q' ~6 s' Q <statement sequence2>;
. ]' A- Q5 \, g3 y ...
% n% |, F* S" t else
G9 S; u2 y- h <statement sequence3>;( p6 s- l9 d7 z3 Z$ ^( W2 L, ]( t
end;
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2循环语句
0 C0 ]; j# K2 H5 R& B! p, } (1) from <statement sequence1>+ A( n7 n7 R6 Z6 I, L
until <condition> loop7 k) q" i9 H5 P/ |' `3 u" Q
<statement sequence2>;" w8 H* v3 {5 Z0 }- i/ _ S0 s- g/ D+ ^
end;
# t; F5 E& Q4 T- ^: u* I (2) while <condition> loop; W$ X& n3 C$ S6 H% T% J. ]3 Y
<statement sequence1>;
1 \8 _( T- ]% p+ ?5 j0 S/ G end;3 t) I9 [$ K( ?! C }7 i
(3) repeat
8 `6 W( z) x4 z+ |4 J2 ^ <statement sequence1>;
' K" G0 J4 i4 U# e N1 l until <condition>;" A" s2 H) s5 X! ^: }6 c+ _
(4) for <condition> to <condition> loop4 q$ _! a5 X$ V! \
<statement sequence1>;
% @' i9 U/ r% n5 B0 f8 Y; r next;( ?# u( k3 X6 }# A9 F1 d
3中断语句
# u" Q5 C9 u4 ]/ O+ Q" E) R waituntil <condition> prio <integer expression>;4 G( M' f) w5 }4 z
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以上为常用的函数！
1 M+ s; Z0 M1 b, K+ {# s% u7 y还有很多，如有需要我把资料发到你邮箱里 9 s' ?4 S" o5 b- Q! w
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