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

To create a simple program that multiplies two matrices in MATLAB and allows the user to input the elements, you can follow these steps:

Prompt the user to enter the dimensions of the matrices and create empty matrices based on those dimensions.


main.m
rows_A = input('Enter the number of rows for matrix A: ');
cols_A = input('Enter the number of columns for matrix A: ');
A = zeros(rows_A, cols_A);

rows_B = input('Enter the number of rows for matrix B: ');
cols_B = input('Enter the number of columns for matrix B: ');
B = zeros(rows_B, cols_B);
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Ask the user to input the elements for each matrix using nested loops.


main.m
disp('Enter the elements for matrix A:');
for i = 1:rows_A
    for j = 1:cols_A
        A(i, j) = input(sprintf('Enter the element at position (%d, %d): ', i, j));
    end
end

disp('Enter the elements for matrix B:');
for i = 1:rows_B
    for j = 1:cols_B
        B(i, j) = input(sprintf('Enter the element at position (%d, %d): ', i, j));
    end
end
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Check if the dimensions of the matrices are compatible for matrix multiplication (the number of columns in matrix A should be equal to the number of rows in matrix B). If not, show an error message and terminate the program.


main.m
if cols_A ~= rows_B
    disp('Error: The number of columns in matrix A should be equal to the number of rows in matrix B.');
    return; % Terminate the program
end
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Multiply the two matrices using the * operator and store the result in a new matrix C.


main.m
C = A * B;
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Display the resulting matrix C.


main.m
disp('Resulting matrix C:');
disp(C);
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Putting it all together in a MATLAB script, the complete example would be:


main.m
rows_A = input('Enter the number of rows for matrix A: ');
cols_A = input('Enter the number of columns for matrix A: ');
A = zeros(rows_A, cols_A);

rows_B = input('Enter the number of rows for matrix B: ');
cols_B = input('Enter the number of columns for matrix B: ');
B = zeros(rows_B, cols_B);

disp('Enter the elements for matrix A:');
for i = 1:rows_A
    for j = 1:cols_A
        A(i, j) = input(sprintf('Enter the element at position (%d, %d): ', i, j));
    end
end

disp('Enter the elements for matrix B:');
for i = 1:rows_B
    for j = 1:cols_B
        B(i, j) = input(sprintf('Enter the element at position (%d, %d): ', i, j));
    end
end

if cols_A ~= rows_B
    disp('Error: The number of columns in matrix A should be equal to the number of rows in matrix B.');
    return; % Terminate the program
end

C = A * B;

disp('Resulting matrix C:');
disp(C);
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Hope this helps!

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

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