Mid2 33rd_to_Define_a_Matrix

 r = int(input("Enter the number of rows:"))

c = int(input("Enter the number of columns:"))

matrix = []

print("Enter the entries rowwise: ")

for i in range(r):

    a=[]

    for j in range(c):

        a.append(int(input( )))

    matrix.append(a)

for i in range(r):

    for j in range(c):

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

    print()

#output:

Enter the number of rows:2 Enter the number of columns:2 Enter the entries rowwise: 1 2 3 4 1 2 3 4