1 echo off
 2 color 0d
 3 echo bat Function example
 4 echo =================================
 5 echo ==========Func No paramter ======
 6 echo =================================
 7 echo before call myFuncNoPara
 8 call:myFuncNoPara
 9 echo after call myFuncNoPara
10 echo =================================
11 echo ===========Func has paramter=====
12 echo =================================
13 echo before call myFuncHasPara
14 call:myFuncHasPara 123 abc
15 echo after call myFuncHasPara
16 echo =================================
17 echo =======Func with return value====
18 echo =================================
19 set return=123
20 set returnPara=321
21 echo return:%return%
22 echo returnPara:%returnPara%
23 echo befora call myFuncReturnValue
24 call:myFuncReturnValue returnPara abc
25 echo after call myFuncReturnValue
26 echo return:%return%
27 echo returnPara:%returnPara%
28 
29 pause
30 :myFuncNoPara
31 echo myFuncNoPara enter
32 echo myFuncNoPara First para:%1
33 echo myFuncNoPara Second para:%2
34 echo myFuncNoPara Third para:%3
35 echo myFuncNoPara exit
36 goto:eof
37 
38 :myFuncHasPara
39 echo myFuncHasPara enter
40 echo myFuncHasPara First para:%1
41 echo myFuncHasPara Second para:%2
42 echo myFuncHasPara Third para:%3
43 echo myFuncHasPara exit
44 goto:eof
45 
46 :myFuncReturnValue
47 echo myFuncReturnValue
48 echo myFuncReturnValue First para:%1
49 echo myFuncReturnValue Second para:%2
50 set "%~1=%2%"
51 set return=%2
52 goto:eof