Looking for suggestions on cleaning up my program

Hey forum, this is my first post. I am re-learning MATLAB, currently working my way through a textbook from a few semesters ago. The textbook is an older edition and supposedly leaves out a lot of new MATLAB functions- also, I'm still a beginner at programming. I have created a program that I'd like to keep building and editing as I learn more and more stuff. Is there anything in the code that really sticks out as unnecessary or inefficient?

% Matrix Creator
% This script file creates a matrix using for loops and alters them using a switch function.
clc;
fprintf('The following program will ask for matrix dimensions and then prompt\n you to enter the matrix elements, by row then by column.\n');
ma=input('Enter the number of rows you would like matrix A to have: ');
na=input('Enter the number of columns you would like matrix A to have: ');
A=zeros(ma,na);
fprintf('\n')
%After taking user input for the number of columns and rows of Matrix A
%(the user will be prompted to create a matrix B later), the following
%loop is used to collect input for each individual element of the matrix.
for r=1:ma
  for c=1:na
      fprintf('\tEnter row %i, column %i:',r,c)
      A(r,c)=input('');
  end
  fprintf('\n')
end
A
fprintf('\n')
m2=input('Would you like to work with another matrix? (y/n):','s');
if strcmpi(m2, 'y')==1
mb=input('Enter the number of rows you would like the second matrix to have: ');
nb=input('Enter the number of columns you would like the second matrix to have: ');
B=zeros(mb,nb);
fprintf('\n')
for r=1:mb
  for c=1:nb
      fprintf('\tEnter row %i, column %i:',r,c)
      B(r,c)=input('');
  end
  fprintf('\n')
end
B
else
  disp('Now to work on the matrix...')
end
%At this point, the plan is to prompt the user to do one of many operations
%on the matrix/matrices, which will be done using a switch case command.
fprintf('\nAt this point, you may choose from the following operations to perform')
fprintf('on the matrix:\n* = Matrix must be square\n** = Matrix dimensions')
fprintf('must fit\n\t1 - transpose\n\t2 - determinant**\n\t3 - inverse**\n\t')
fprintf('4 - square**\n\t5 - square each element\n')
d=input('Enter choice: ');
cm=input('Enter which matrix(A or B) to perform operation on: ','s');
switch cm
  case {'a','A'}
      switch d
          case 1
              C=A';
          case 2
              if ma==na
                  C=det(A);
              else
                  disp('Error, the matrix is not square')
              end
          case 3
              if ma==na
                  C=inv(A);
              else
                  disp('Error, the matrix is not square')
              end
          case 4
              if ma==na
                  C=A^2;
              else
                  disp('Error, the matrix is not square')
              end
          case 5
              C=A.^2;
      end
  case {'b','B'}
      switch d
          case 1
              C=B';
          case 2
              if mb==nb
                  C=det(B);
              else
                  disp('Error, the matrix is not square')
              end
          case 3
              if mb==nb
                  C=inv(B);
              else
                  disp('Error, the matrix is not square')
              end
          case 4
              if mb==nb
                  C=B^2;
              else
                  disp('Error, the matrix is not square')
              end
          case 5
              C=B.^2;
      end
end
C

Answer 1

[D]

I'm sure there are other more important things, but

if strcmpi(m2, 'y')==1

could be replaced by

if strcmpi(m2, 'y')

Also, if you could insert blank lines in your code, it would be easier to read.