Write a C++ function to find the norm of a matrix. The norm is defined as the square root of the sum of squares of all elements in the matrix Note: the use of pointers is not allowed and code should...

Write a C++ function to find the norm of a matrix. The norm is defined as the square root of the sum of squares of all elements in the matrix

Note: the use of pointers is not allowed and code should be simple.The user should input the matrix he wants.We cannot initialize the matrix on our own.