how to change the build parameter of `msbuild` command line

Question

I currently clean my sln file using

Msbuild myproj.sln  /t:clean

and then build it using

Msbuild myproj.sln

Both the above work because my project is set for 32 bit.

My question is how can I incorporate 64bit into the above functions ?

Say I want to build 64 bit what should the command be then ? I know the following command simply picks up the one that is set as default in Visual studio

Msbuild myproj.sln

Answer 1

MSBuild myproj.sln /p:Platform=x64