CODEWITHSUNDEEP
c++cin
user1567909
user1567909

Reputation: 1480

Using cin.eof()

I have some code and I wanted to use cin.eof() to stop my program from reading the input. I was thinking of doing:

char array[10]
while(!cin.eof())
{
  for(int i = 0; i < 10; i++)
  {
    cin >> array[i];
  }
}

And the code goes on. However, when I click '\n', my output is outputted. When i click cntrl + d, (on a UNIX terminal) the program performs the output again and then proceeds to end. How do I get it so that my program stops reading at a newline and prints my output when I type cntrl + d only once?

Thanks.

Upvotes: 1

Views: 8336

Answers (1)

James Kanze
James Kanze

Reputation: 153909

First, cin.eof() doesn't do anything useful until input has failed. You never want to use it at the top of a loop.

Secondly, it's not really clear to me what you are trying to do. Something like:

std::string line;
while ( std::getline( std::cin, line ) ) {
    //  ...
}

perhaps? This will read a line of text into the variable line, until end of file; when you encounter an end of file, the input will fail, and you will leave the loop.

Upvotes: 1

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