Subtraction of two matrices in python with user input

Subtraction of two matrices in python

In [1]:

r1 = int (input('Enter the number of rows of first matrix: '))

c1 = int (input('Enter the number of columns of first matrix: '))

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r2 = int (input('Enter the number of rows of second matrix: '))

c2 = int (input('Enter the number of columns of second matrix: '))

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if r1 != r2 and c1 != c2:

    print ('Substraction is not possible, because the dimensions are not same.')

else:

    print ('Substaction is possible.')

    print ('Enter the elemenets of the first matrix: ')

    A = []

    for i in range(0, r1):

        r = []

        for j in range(0, c1):

            r.append(int(input()))

        A.append(r)

    print ('Enter the elements of the second matrix: ')

    B = []

    for i in range(0, r2):

        r = []

        for j in range(0, c2):

            r.append(int(input()))

        B.append(r)

    #Performing Substraction

    sub = []

    for i in range(0, r1):

        row = []

        for j in range(0, c1):

            row.append(A[i][j] - B[i][j])

        sub.append(row)

    print ('First matrix is: ')

    for i in range(0, r1):

        for j in range(0, c1):

            print (A[i][j], end = " ")

        print()

    print ('Second matrix is: ')

    for i in range(0, r2):

        for j in range(0, c2):

            print (B[i][j], end = " ")

        print()

    print ('Matrix after performing substraction from A to B: ')

    for i in range(0, r1):

        for j in range(0, c1):

            print (sub[i][j], end = " ")

        print()

Enter the number of rows of first matrix: 3
Enter the number of columns of first matrix: 3
Enter the number of rows of second matrix: 3
Enter the number of columns of second matrix: 3
Substaction is possible.
Enter the elemenets of the first matrix: 
20
30
40
30
40
50
40
50
60
Enter the elements of the second matrix: 
2
3
4
3
4
5
4
5
6
First matrix is: 
20 30 40 
30 40 50 
40 50 60 
Second matrix is: 
2 3 4 
3 4 5 
4 5 6 
Matrix after performing substraction from A to B: 
18 27 36 
27 36 45 
36 45 54 

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