Write a C++ program that checks whether the bracketing operators (parentheses, brackets, and curly braces) in a string are properly matched. As an example of proper matching, consider the string

s = 2 * (a[2] + 3); x = (1 + (2));

If you go through the string carefully, you discover that all the bracketing operators are correctly nested, with each open parenthesis matched by a close parenthesis, each open bracket matched by a close bracket, and so on.

Show the (.cc and .h) headers with the code, a makefile that compiles the code, a file named "readme.txt" that explains how to compile and run the program.