MATLAB: I want to execute if else statement using size of array or matrix

Question

For example:

    if size(A)=4*3                       % 4*3 is row*column
    fprintf ("something")
    else
    fprintf ("nothing")

then what is the correct way to execute such problem?

Answer 1

    if isequal(size(A),[4,3])                     
     fprintf ("something")
    else
     fprintf ("nothing")
    end