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

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

Prompt the user to enter the dimensions of the matrices and create empty matrices to store the user input:


main.m
rows1 = input('Enter the number of rows for matrix 1: ');
cols1 = input('Enter the number of columns for matrix 1: ');
matrix1 = zeros(rows1, cols1);

rows2 = input('Enter the number of rows for matrix 2: ');
cols2 = input('Enter the number of columns for matrix 2: ');
matrix2 = zeros(rows2, cols2);
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Ask the user to input the elements of the first matrix:


main.m
disp('Enter elements of matrix 1: ');
for i = 1:rows1
    for j = 1:cols1
        matrix1(i, j) = input(sprintf('Enter element at position (%d, %d): ', i, j));
    end
end
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Ask the user to input the elements of the second matrix:


main.m
disp('Enter elements of matrix 2: ');
for i = 1:rows2
    for j = 1:cols2
        matrix2(i, j) = input(sprintf('Enter element at position (%d, %d): ', i, j));
    end
end
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Check if the matrices can be multiplied by comparing the number of columns in the first matrix with the number of rows in the second matrix using an if statement:


main.m
if cols1 == rows2
    % Perform matrix multiplication
else
    disp('Matrices cannot be multiplied.');
end
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If the matrices can be multiplied, perform the matrix multiplication using nested for loops:


main.m
result_matrix = zeros(rows1, cols2);
for i = 1:rows1
    for j = 1:cols2
        for k = 1:cols1
            result_matrix(i, j) = result_matrix(i, j) + matrix1(i, k) * matrix2(k, j);
        end
    end
end
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Display the result matrix:


main.m
disp('Result of matrix multiplication: ');
disp(result_matrix);
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Putting all the code snippets together, the complete program would look like this:


main.m
rows1 = input('Enter the number of rows for matrix 1: ');
cols1 = input('Enter the number of columns for matrix 1: ');
matrix1 = zeros(rows1, cols1);

rows2 = input('Enter the number of rows for matrix 2: ');
cols2 = input('Enter the number of columns for matrix 2: ');
matrix2 = zeros(rows2, cols2);

disp('Enter elements of matrix 1: ');
for i = 1:rows1
    for j = 1:cols1
        matrix1(i, j) = input(sprintf('Enter element at position (%d, %d): ', i, j));
    end
end

disp('Enter elements of matrix 2: ');
for i = 1:rows2
    for j = 1:cols2
        matrix2(i, j) = input(sprintf('Enter element at position (%d, %d): ', i, j));
    end
end

if cols1 == rows2
    result_matrix = zeros(rows1, cols2);
    for i = 1:rows1
        for j = 1:cols2
            for k = 1:cols1
                result_matrix(i, j) = result_matrix(i, j) + matrix1(i, k) * matrix2(k, j);
            end
        end
    end
    disp('Result of matrix multiplication: ');
    disp(result_matrix);
else
    disp('Matrices cannot be multiplied.');
end
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You can copy and paste the code into MATLAB for execution. Note that this program assumes that the user will input valid matrix dimensions and elements.

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

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