Create a c program with the following c code declares variable mtx of matrix type, and dynamically allocates memory for mtx. it will then get keyboard input for the n-by-n matrix. subsequently, the program de-allocates (free) the memory of the matrix.
a. your task is to write the codes to dynamically allocate and de-allocate the memory for the matrix.
b. subsequently, you have to modify the above code so that now the program will first ask the user to enter the size of the matrix, accept two matrices of the same size (maximum size 5-by-5) where each element of these matrices are manually input, and then perform matrix addition. the program will then output all the input matrices and the matrix addition results, both to the standard output screen and also to the text file called matrix. txt.