// Example 11.1. Program to read a string and print its reverse

#include <iostream>

using namespace std;

int main()
{
   int stringLength(const char []); // prototype

   const int MAX_LENGTH = 15;  // maximum length of string
   char word[MAX_LENGTH + 1];  // holds the string
   int stringSize;             // actual string length
   int i;                      // index

   cout << "Please enter a word of up to "
        << MAX_LENGTH << " letters: ";
   cin >> word;

   cout << "The word is " << word << "." << endl;

   stringSize = stringLength(word);
   cout << "The reversed word is ";
   for (i = stringSize - 1; i >= 0; --i)
	cout << word[i];
   cout << "." << endl;

   return 0;
}

//
// Function to return the string length
// Pre:  str is a char array containing a string.
// Post: The length of string was returned.
//

int stringLength(const char str[])
{
   int stringSize = 0;    // actual string length

   while (str[stringSize] != '\0')
	++stringSize;

   return stringSize;
}