create a simple program that can multiply two matrices a and b. let the user input the elements in matrices. in matlab

To create a simple program in MATLAB that can multiply two matrices with user input, you can follow the steps below:

  1. Prompt the user to input the dimensions of the matrices and create empty matrices:
main.m
n = input('Enter the number of rows for matrix A: ');
m = input('Enter the number of columns for matrix A / number of rows for matrix B: ');
p = input('Enter the number of columns for matrix B: ');

A = zeros(n, m);
B = zeros(m, p);
233 chars
7 lines
  1. Use loops to fill the matrices with user input:
main.m
fprintf('Enter elements for matrix A: \n');
for i = 1:n
    for j = 1:m
        A(i, j) = input(sprintf('A(%d,%d) = ', i, j));
    end
end

fprintf('Enter elements for matrix B: \n');
for i = 1:m
    for j = 1:p
        B(i, j) = input(sprintf('B(%d,%d) = ', i, j));
    end
end
279 chars
14 lines
  1. Multiply the matrices using the * operator:
main.m
C = A * B;
11 chars
2 lines
  1. Display the resulting matrix:
main.m
disp('Resulting matrix C:');
disp(C);
38 chars
3 lines

Here is the complete code:

main.m
n = input('Enter the number of rows for matrix A: ');
m = input('Enter the number of columns for matrix A / number of rows for matrix B: ');
p = input('Enter the number of columns for matrix B: ');

A = zeros(n, m);
B = zeros(m, p);

fprintf('Enter elements for matrix A: \n');
for i = 1:n
    for j = 1:m
        A(i, j) = input(sprintf('A(%d,%d) = ', i, j));
    end
end

fprintf('Enter elements for matrix B: \n');
for i = 1:m
    for j = 1:p
        B(i, j) = input(sprintf('B(%d,%d) = ', i, j));
    end
end

C = A * B;

disp('Resulting matrix C:');
disp(C);
564 chars
26 lines

Now, when you run this program in MATLAB, it will prompt you to input the dimensions and elements of the matrices, and then it will display the result of the matrix multiplication.

related categories

gistlibby LogSnag