Problem configuring mex to use visual studio as its default compiler

I am using MATLAB R2018a and configuring mex to use visual studio 2017 as its default compiler but each time I type "mex -setup -v" I get error: no supported compiler was found. I have tried "mex -setup CPP -v" but no difference.Can someone help?

[Imran Mumtaz]

I am using Windows 7

[Ingrid van Peufflik]

According to the help I use it set to to it this way:

mex -setup:'C:\Program Files\MATLAB\R2020a\bin\win64\mexopts\msvc2017.xml' C

If you type : mex -setup in your command window, all found compilers are shown including the command to set those as default compiler.

[Imran Mumtaz]

It is giving the following error:MEX cannot use compiler 'Microsoft Visual C++ 2017 (C)' because that compiler is not

found.

Though visual studio is already installed.Why it is not found?But visual studio is installed in C/programfiles and matlab is installed in D:/ drive.Isn't it like that it is in the D drive that's why visual studio not found error coming?