On a 64-bit machine running in 64-bit mode:
echo %programfiles%==>C:\Program Filesecho %programfiles(x86)%==>C:\Program Files (x86)
On a 64-bit machine running in 32-bit (WOW64) mode:
echo %programfiles%==>C:\Program Files (x86)echo %programfiles(x86)%==>C:\Program Files (x86)
On a 32-bit machine running in 32-bit mode:
echo %programfiles%==>C:\Program Filesecho %programfiles(x86)%==>%programfiles(x86)%