Thread: cin.get()

Hi,

1. if you easily get annoyed at stupid questions, don't read on

2. I'm using dev-c++ + mingw. I was trying to keep the windows of my console apps open using cin.get(); but in most of the cases it didn't work. Sometimes it did, but I don't really see why (it's _not_ because of some silly syntax error or something, i'm sure). I'm using system("pause >nul"); instead, and it works fine, though I know it isn't very elegant.

3. I've written a small program to demonstrate this (inspired by PublicAutopsy, hehe ):

Code:

   #include <iostream>
   using namespace std;
   
   int main () {
      int password;
      do {
         cout << "Enter password: ";
         cin >> password;
         cout << "\n";
      } while (password!=12345);
      cout << "Password OK.";
      cin.get();
      return 0;
   }

I don't know what's wrong with it, it works fine except the cin.get line. Any guesses?

When you enter your password, you validate your input by pressing enter (which represents the '\n' character). When you read the password with cin, cin stops before the line return which stays in the input stream. cin.get() reads that character and moves on.

You can add cin.ignore() to your code, to ignore a certain number of characters in the input stream.

Thank you, guys, this worked.