How EOF works in C?

Question

Below is a sample code

while ((c = getchar()) != EOF) 
{ 
      putchar(c);  
}

I can understand most of the part but not that EOF (End of file).

Duplicate question. Search SO for this – avmohan Mar 30 '14 at 15:18 — avmohan, Mar 30 '14 at 15:18

score 1 · Answer 1 · answered Mar 30 '14 at 15:20

1

It's easy. The EOF is a constant equal to -1 which is returned by getchar() when the standard input has reached the and and cannot give you many more characters.

answered Mar 30 '14 at 15:20

Pavel Šimerda

5,783
1
31
31

How EOF works in C?

1 Answers1