While loop with try catch fails at bad cin input

Question

I can\'t seem to figure out why this falls into a loop after getting non-int input. I\'ve tried cin.flush(), which doesn\'t seem to exist, cin.clear(), which seems like it s

Answer 1

My Problem was to block char input to a cin >> number

This error caused an 'infinite' loop showing my prompt cout << prompt with no way of exit but kill the process ...

The following shows what worked for me!

========================================

double fi_trap_d()    // function to return a valid range double catching errors  
{  
  double fi_game_sec;  
//-------------------------------------------  
   do  
   {  
    fi_game_sec = -1;  
    cout << fi_game_sec_c;  

        //------------------------------  
    cin.ignore();  // (1)
        //------------------------------  

    try  
    {  cin >> fi_game_sec;  cin.clear(); }  // (2)
        catch (...)  //out_of_range)  
      {  
        fi_game_sec = -1;  
        cout << " Dis am an error!\n";  
                     // just loop back as we asked for a number  
      }  
    } while (fi_game_sec < 1);  
//-------------------------------------------  
  return fi_game_sec;  
}  

========================================

Despite trying the " Dis am an error! " has NEVER shown up.

The key was (1) & (2) !