Can anyone see why my program won't loop?

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  #include "stdafx.h"
  #include <iostream>
  
  using namespace std;
  
  int main()
  {
  char letter, nextnumber;
  int digit, num, counter;
  
  do
  {
  cout << "Program to convert telephone numbers expressed in letters into digits." << endl;
  cout << "Enter a phone number expressed in letters: ";
  cin >> letter;
  cout << endl;
  
  counter = 0;
  nextnumber = 0;
  
  while (counter < 7)// I think this loop is the problem.
  {
  if (counter == 3)
  cout << "-";
  
  if (65 <= letter && letter < 91)
  {
  num = static_cast<int>(letter)
  - static_cast<int>('A');
  
  digit = (num / 3) + 2;
  
  if (((num / 3 == 6) || (num / 3 == 7))
  && (num % 3 == 0))
  digit = digit - 1;
  
  if (digit > 9)
  digit = 9;
  
  cout << digit;
  }
  else if (97 <= letter && letter < 123)
  {
  num = static_cast<int>(letter)
  - static_cast<int>('a');
  
  digit = (num / 3) + 2;
  
  if (((num / 3 == 6) || (num / 3 == 7))
  && (num % 3 == 0))
  digit = digit - 1;
  
  if (digit > 9)
  digit = 9;
  cout << digit;
  }
  else
  cout << "Invalid input." << endl;
  
  cin >> letter;
  
  counter++;
  }
  
  cout << "Enter another number? (Y/N) ";// Why doesn't this execute after the number is displayed?
  cin >> nextnumber;
  } while (nextnumber == 'Y' || nextnumber == 'y');
  
  system("pause");
  return 0;
  }
  

  • Edited by Matt_Hardesty Friday, October 30, 2015 6:33 PM updated code

  Friday, October 30, 2015 8:57 AM