Instructions: C++ a) Use scanf function to accept the input from the user. b) Use floating point inputs wherever possible. c) All programs must use arrays and functions. d) Tabulate your results. e) Need hard copy of () source code and (ii) output for each program. 1. Write a program that can calculate the sum of three equally sized matrices, [A]+ [B]+ ad the inrut from a t st n o thefile being the mumber of rows and Read the input from a file with the first line of the file being the number of rows and columns of each matrix. The rest of the file has the elements of the matrices. The output specification is to print the sum matrix. [Hint: Use a function named sum matrices to accept the 3 matrices and print the sum matrix inside the function]