I got the solution here
syntax:
csc /out:"<drive>:\<directory if any>\<filename>.exe"
"<drive>:\<directory if any>\<filename>.cs"
csc /out:"e:\abc.exe" "d:\abc.cs"
However you can change the .exe name
csc /out:"e:\myFile.exe" "d:\abc.cs"
Thanks to everyone to put your time on this query.