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发表于 2012-11-13 08:48:12
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1判断语句1 i$ ?" P) q4 t: m& C( B. r. d" V5 [
if <condition> then
: x; T2 i( \, s; k5 ]" M4 }5 N, b <statement sequence1>;
5 z1 n! o" c1 m; |% |# ^: i8 U; a$ b elseif <condition> then
/ E, t9 D. O( a <statement sequence2>;
9 q. W9 h5 T& j0 Q3 K% q else 0 c' l! R& P. u# }1 r) a
<statement sequence3>;
+ E) b w- {6 x) j2 y% \8 _2 v end;
# M: b q. \+ f2 N; Y如果分支比较多，用：/ {/ I# x1 C8 L9 Q
inspect <expression>
! M4 F P; @9 E1 a; V1 B9 K* F when <constant_list> then& y( D! r7 u, |. m. z
<statement sequence1>;
) Z1 z' h: F- f& K1 F& B8 |9 u when <constant_list> then& s6 I* `& ~$ @) N4 I; I8 c
<statement sequence2>;& O( } d+ A9 M! p9 G% _
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else
7 H ?, d4 s8 o3 y A2 P <statement sequence3>;
2 o! e/ O2 E+ p( v4 Lend;
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C% d. u+ L* o4 t2 z3 p+ h2循环语句) m3 c+ Q. E Q* F
(1) from <statement sequence1>2 L5 h, D% y8 s( L2 V* D. \1 y8 ^
until <condition> loop
. T [4 F& G, A3 Y3 K* B <statement sequence2>;8 v* j2 C+ l' H9 L, T9 K, D
end;$ o9 v6 R) j; H2 e6 }6 V0 `
(2) while <condition> loop
' Z) B: Y f6 T. x& W <statement sequence1>;
) M) L8 h" W/ B b end;, v& }' \$ w% y# z# o
(3) repeat 1 X% g8 M; F; z7 C* P o& _
<statement sequence1>;
% _" \2 q; m2 V) e4 u- I& R until <condition>;
- ~1 p0 R/ {8 |0 \ (4) for <condition> to <condition> loop
' m @9 j" S( w {. [6 b0 J <statement sequence1>;! h6 C$ g x% Y
next;
2 F `- q% [( i" g- Q- N6 S3中断语句
; a8 ~8 N( _ W4 r& H' R, ^! D9 R waituntil <condition> prio <integer expression>;& \# ^$ K$ V" e) B& L% H
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2 L) h5 X& A+ j7 L4 }# Y0 ]以上为常用的函数！+ p. u) t- ?6 C: Z! V4 f
还有很多，如有需要我把资料发到你邮箱里 % Y/ [2 J5 F) {. r) o
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