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发表于 2012-11-13 08:48:12
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1判断语句9 }% Q z: P- n
if <condition> then
+ `2 }, k9 s U$ K$ c' H3 H <statement sequence1>;
% ^, w1 Y$ ?; h' z( W. { elseif <condition> then) A9 U& i/ n* v2 O5 s/ e) ]# ^
<statement sequence2>;
/ p* R. @8 m/ D# ] else
% F6 h: R. p+ v$ W5 Y+ O <statement sequence3>;
; S' v% m5 o/ R) t' d) D end;
" @9 q; G0 Z! e: I" E如果分支比较多，用：
0 ]3 P1 ?2 H7 e( n/ X- y inspect <expression>
4 }( ~; h* J, M; D6 v when <constant_list> then
- m9 |, h4 w2 h <statement sequence1>;
4 t4 r: h4 x3 Y, i: B' n when <constant_list> then
; Y/ s! o& v4 ^ <statement sequence2>;
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else }& H/ ^" |7 C1 |0 v1 G/ G7 \( n
<statement sequence3>;
5 k9 S8 j3 n- k3 Xend;) r9 k* e6 l, ~ ?
; P6 j9 c" S% _2 R2循环语句' S4 b, A$ h) Z0 r
(1) from <statement sequence1>
6 s6 `& E3 ]& B, n. I until <condition> loop
1 Z; K$ i: v* H' B, T <statement sequence2>;- f8 _2 i4 W4 e
end;4 s/ c7 B; u; ~% @" \+ ]5 \: g
(2) while <condition> loop" z7 s2 D' _, F
<statement sequence1>;
! p; x$ ~" P2 ^6 t! |: z( Y) [ end;
6 Q/ X i) Y7 X9 i (3) repeat
6 I8 r' A5 O( R% r2 S <statement sequence1>;: u0 ?8 t5 Z) s
until <condition>;4 i6 u3 k6 U8 W, p; m& y! r% ^
(4) for <condition> to <condition> loop
# X" K3 t6 V0 x- K x: w" w <statement sequence1>;
( E: Q* f+ }; M- Z' D+ |8 K+ ]. @ next;
- Y1 I2 x V/ Q! }0 Y- [' m7 E3中断语句 S3 Q: ^* p* r/ I
waituntil <condition> prio <integer expression>;2 k. r N, E, n# ^* ^) `7 V
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以上为常用的函数！3 u; \( g3 z3 n
还有很多，如有需要我把资料发到你邮箱里 / L5 ?' ]: D }. T( A6 i7 f
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