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发表于 2012-11-13 08:48:12
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1判断语句
- P/ @1 d) N* w0 S- I' a if <condition> then5 @/ L6 h K2 t
<statement sequence1>;" s+ G. T1 @+ [+ @; ]; i. {" ?
elseif <condition> then
: `, \$ w n, l/ B( z: D <statement sequence2>;: A; n8 H/ V! i' O- C+ V2 Y
else 0 {. t* i( J/ ~/ G ~1 I
<statement sequence3>;
- r; r+ i0 ?* r2 F& }5 l end;
' v( ]- s& i7 |& F如果分支比较多，用：
9 Z* \/ i: o9 U3 X' u& P8 P/ Z' V inspect <expression>
# {& T9 Z8 C6 e when <constant_list> then: e- X. m4 {8 N* ?, }6 r* s5 }7 f
<statement sequence1>;
1 f' s2 m# u1 a' u9 g' [( i! S when <constant_list> then$ V! F, Y7 K+ Q0 o D& l
<statement sequence2>;4 X6 F) ?6 A# h; X! a' {6 n0 `8 R
...! p2 J" D! T% i8 v L2 q
else* D* n: Q; t& `! {9 R# O8 u
<statement sequence3>;, R# }+ k8 E, o' `
end;
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2循环语句! n K* R4 w: |% h" V1 p$ q |/ U
(1) from <statement sequence1>
8 ~6 ^8 R q1 \: y9 B. O4 r9 c7 w until <condition> loop
* }3 A) z. L: E5 g4 J- f3 c <statement sequence2>;
2 Z. y) v2 f$ U0 S end;
2 J9 T& ~5 q7 A3 R1 f& | (2) while <condition> loop
8 x: e% P" S% l6 c! ~$ h6 d7 n <statement sequence1>;
7 L6 k7 ~) R- O7 k5 r, R end;. ~+ P6 h4 [+ | C q8 ^
(3) repeat 9 Z+ o4 @4 x6 a3 A8 i
<statement sequence1>;
) H; y" X. K1 t! z" D4 @5 o7 {, T until <condition>;( c v9 m3 F# B I9 K8 U
(4) for <condition> to <condition> loop* s9 |! B6 Y: t1 ~
<statement sequence1>; Z" K/ C0 ?) M4 A
next;
% H2 l) Q1 Z7 j/ {" E9 J3中断语句
* B* w# w3 \1 u. `) x waituntil <condition> prio <integer expression>;% B6 D5 Z+ a, e: H- P& x$ |
x! M* l! j4 Z% i: `. G6 D2 L7 J) G; y E. n; V2 l$ m5 X
以上为常用的函数！
: @ l4 A# }$ C- c7 E6 H还有很多，如有需要我把资料发到你邮箱里 ' y# C! f4 w# z; O s
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