| c++ Programming Glossary: cin.failinput validation for numeric input http://stackoverflow.com/questions/10178830/input-validation-for-numeric-input  namespace std void isNumeric int iN while 1 cin iN if cin.fail  cin.clear  cin.ignore numeric_limits streamsize max ' n' cout.. 
 User Input of Integers - Error Handling http://stackoverflow.com/questions/1283302/user-input-of-integers-error-handling  exthree  v room_choice .is_occupied true break  else if cin.fail  cin.clear cin.ignore cout Incorrect entry. Try again    c error..   share improve this question   You can use cin.good or cin.fail to determine whether cin could successfully deal with the input.. 
 Correct way to use cin.fail() http://stackoverflow.com/questions/17928865/correct-way-to-use-cin-fail  way to use cin.fail  What is the correct way to use cin.fail I am making a program.. way to use cin.fail  What is the correct way to use cin.fail I am making a program where you need to input something. It.. instead of a number the console goes crazy. How can I use cin.fail to fix this Or is there a better way  c cin   share improve.. 
 Checking input value is an integer http://stackoverflow.com/questions/18728754/checking-input-value-is-an-integer  this question   You can check like this int x cin x if cin.fail Not an int. Furthermore you can continue to get input until.. via #include iostream int main int x std cin x while std cin.fail std cout Error std endl std cin.clear std cin.ignore 256 ' n'.. 
 C++ cin.fail() question http://stackoverflow.com/questions/2032719/c-cin-fail-question  cin.fail question  When running the following code and enter a number.. int number do cout Enter a number 0 to exit cin number if cin.fail cout cin failed. endl cin.clear else cout cin succeeded number.. 
 Good input validation loop using cin - C++ http://stackoverflow.com/questions/2075898/good-input-validation-loop-using-cin-c  Please enter in your taxable income cin taxableIncome if cin.fail  cout Please enter a valid integer endl error 1 cin.clear cin.ignore.. 
 While loop with try catch fails at bad cin input http://stackoverflow.com/questions/2292202/while-loop-with-try-catch-fails-at-bad-cin-input  5 try cout n nPlease enter the first number  cin entry if cin.fail  throw Sorry I don't think that's a number  if entry 0  throw.. 
 Filtering out invalid user inputs http://stackoverflow.com/questions/3875780/filtering-out-invalid-user-inputs  selection 1 while selection 1 selection 4 cin selection if cin.fail selection 1 selection 4  cout invalid selection endl cout selection.. 
 What is the best way to do input validation in C++ with cin? http://stackoverflow.com/questions/545907/what-is-the-best-way-to-do-input-validation-in-c-with-cin  std int main int a do cout nEnter a number cin a if cin.fail  Clear the fail state. cin.clear  Ignore the rest of the wrong.. inputCompletionFlag true do cout nEnter a number cin a if cin.fail  Clear the fail state. cin.clear  Ignore the rest of the wrong.. 
 A simple question about cin http://stackoverflow.com/questions/5864540/a-simple-question-about-cin  to normal operation so you can prompt for more input. if cin.fail cout ERROR You did not enter an integer get rid of failure state.. 
 Guess the number - Infinite loop when bad read http://stackoverflow.com/questions/6078727/guess-the-number-infinite-loop-when-bad-read  is about the same problem. To summarize cin userInput if cin.fail cout Invalid Entry please try again. endl cin.clear cin.ignore.. 
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