Write a C++ function that takes a string as a parameter and reverse the string. The function contains the pointer to char, front and rear. The front pointer initially referenced the first character in the string and the rear pointer reference to the last character in the string. Reverse the string by swapping the characters referenced by front and rear pointers. Then increment the front pointer and decrement the rear pointer and so on, until the entire string is reversed. Must be user input, not already in code.