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escaping from a switch/loop

Posted on 2004-10-14
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Last Modified: 2010-04-02
Hullo,

I've written a very simple switch inside a loop, it's basically :

  do {
  cout << "\n\nYour answer is :   ";
  cin >> letter;
  letter = toupper(letter);
  switch ( letter )
{
  case 'A': cout << "Incorrect.";
  break;
  case 'B': cout << "Correct.";
  break;
 } } while (letter);

It actually has a few more options, but I won't bore you with that . . The thing is, while this is going on, there's nothing the user can do to end the program.

How can I specify something for the user to type in that will let them escape this loop ?
0
Comment
Question by:drivensnow
3 Comments
 
LVL 12

Expert Comment

by:OnegaZhang
ID: 12314658
do {
  cout << "\n\nYour answer is :   ";
  cin >> letter;
  letter = toupper(letter);
  switch ( letter )
{
  case 'A': cout << "Incorrect.";
  break;
  case 'B': cout << "Correct.";
  break;
 }
if(letter == 'Q')
break; // this break will jump out of the loop
 } while (letter);

welcome to www.fruitfruit.com
0
 
LVL 23

Accepted Solution

by:
brettmjohnson earned 2000 total points
ID: 12314730
do {
      cout << "\n\nYour answer is :   ";
      cin >> letter;
      letter = toupper(letter);
      switch ( letter )
      {
            case 'A': cout << "Incorrect.";
            break;
            case 'B': cout << "Correct.";
            break;
            case 'Q': cout << "Bye.";  letter = 0;      
            break;
      }
} while (letter);
0
 

Author Comment

by:drivensnow
ID: 12316013
It works !  :D Thankee.
0

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