Matlab (modifications)

function [SUM, PRO] = Exam1_3 (ra,ca,rb,cb) r1a = input('enter row 1 number for matrix A\n'); r2a = input('enter row 2 number for matrix A \n'); c1a = input('enter column 1 number for matrix A\n'); c2a = input('enter column 2 number for matrix A\n'); r1b = input('enter row 1 number for matrix B\n'); r2b = input('enter row 2 number for matrix B \n'); c1b = input('enter column 1 number for matrix B\n'); c2b = input('enter column 2 number for matrix B\n'); matrixa = matrixb = PRO = matrixa * matrixb; SUM = matrixa + matrixb; end