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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
- k' V1 J/ `5 U if <condition> then. _9 e7 E' G& ]4 t+ p6 F" t% S
<statement sequence1>;
1 Q4 d! D$ Y; _" n4 U! u% k: J0 Z2 q elseif <condition> then% P4 S: `, f2 M5 F
<statement sequence2>;. ^1 G6 H! ]1 U5 t$ I' F7 U. E
else $ W5 ~$ I, O* N& @
<statement sequence3>;
" V- m# s! h+ L3 j- K end;
6 V: T- P0 F8 Y+ {如果分支比较多，用：
5 F$ v5 V v" t" v) k9 \ inspect <expression>
4 O# X! p! z( U. G when <constant_list> then
- P; o$ j+ e+ }) s. q3 T% L# B <statement sequence1>;' d. o1 A: a# o! H( Q, s
when <constant_list> then
: |7 R+ l8 L4 k- d <statement sequence2>;3 S/ {4 }3 b" R+ T
...
) E% R6 Z) K# I2 k else
8 S7 j. E }9 {/ {5 R* b <statement sequence3>;) G& I# n* `% T+ [
end;
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2循环语句
6 n6 T3 T+ O- W2 @$ b" s (1) from <statement sequence1>- t1 ?( M2 P4 I9 s9 c6 |
until <condition> loop
4 U& \+ \3 i4 y2 ^ <statement sequence2>;
6 m' g# @$ \4 V* Q" S; z end;+ W4 S- \' M0 \- b4 V
(2) while <condition> loop
9 m0 w# T7 |; P9 m2 ?- Q <statement sequence1>;8 ?) a9 c; m% K
end;3 j/ {$ E$ |( F
(3) repeat " N! Q' a% D1 a
<statement sequence1>;5 ]% E$ Y0 G4 F/ p
until <condition>;
5 H" a8 p: C- Y (4) for <condition> to <condition> loop
2 Z! R+ x* v& ~0 T [( S6 S8 m* v <statement sequence1>;& P+ B# j5 V4 w1 K: b
next;
6 I% M& E; j0 O! X B5 z3中断语句
8 x/ F4 {. `2 E; w7 Z: ] waituntil <condition> prio <integer expression>;
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以上为常用的函数！
8 L G, ^3 c6 X" B# F; `4 d还有很多，如有需要我把资料发到你邮箱里 3 R9 V9 `6 t# k8 X' g
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