(C) EOF not working in gcc

[XST1]

I made a simple program to test EOF, yet I can't get it to function properly. Heres my code:

Code: Select all

#include <stdio.h>
main()
{
        int c;
        c = getchar();
        while (c != EOF)
        {
              c = getchar();
        }
}

I can never get out of that while loop, even when I just hit enter (which should be EOF). Anyone know why it isn't working?

[codergeek42]

As far as I know "^D" (Ctrl+D) is the end of file control character.

[Mandr4ke]

I made a simple program to test EOF, yet I can't get it to function properly. Heres my code:

Code: Select all

#include <stdio.h>
main()
{
        int c;
        c = getchar();
        while (c != EOF)
        {
              c = getchar();
        }
}

I can never get out of that while loop, even when I just hit enter (which should be EOF). Anyone know why it isn't working?

hehe i'm pretty sure an EOF char has nothing to do with console input. EOF means end of file, and is generally used with reading files.

you want ...

Code: Select all

while ((int)c != 13) // Usually Enter
while(c != '\r' && c != '\n')  // checking both CR/LF

Code: Select all

[30726]

Like codergeek42 said, you can send an EOF to stdin with Ctrl+d. It's funny that many C tutorials/books have this little example, but yet forget to tell the reader how to send an EOF using the keyboard.