using c++

Write the following functions, void matAdd(double a[][3], double b[][3], double c[][3], int rowsize) that calculates the result of a + b and stores it in matrix c. Matrix a and b must have the same number of rows and columns. void matSub(double a[][3], double b[][3], double c[][3], int rowsize) that calculates the result of a -b and store it in matrix c. Matrix A and B must have the same number of rows and columns. Write a main function which asks the user for the numbers to be stored in the 2 arrays and prints the resulting array in tabular format on the screen (rows/cols))