Write a calculator C PROGRAM program that adds and subtracts. Prompt the user to enter two values and select an operation to perform. Incorporate a program with five modules and functions named as follows:

calc_driver.c - contains the function main() and the user interface

addition.h - contains the prototype for a function named add()

addition.c - contains the function definition for add()

subtraction.h - contains the prototype for a function named subtract()

subtraction.c - contains the function definition for subtract()