// Lab Problem 1.4

// CS211 ADS2

// T Naughton CS NUIM

#include<iostream>

void alphaincrement(void);



void alphaincrement(void){

  char letter;

  cout << "Please enter a letter:" << endl;

  cin >> letter;

  if (letter == 'z'){

    letter = 'a';

  } else if (letter == 'Z'){

    letter = 'A';

  } else {

    letter = char(int(letter) + 1);

  }

  cout << "The next letter is " << letter << '.' << endl;

}



void main(void){



  char choice;



  cout << endl << "Hi! I'm a clever computer program that knows ";

  cout << "the alphabet." << endl;



  choice = 'y';

  while ((choice == 'y') || (choice == 'Y')){

    alphaincrement();

    cout << "Do you want to enter another letter (y = yes)?" << endl;

    cin >> choice;

  }



  cout << "Goodbye!" << endl;

}