[SOLVED] how to enter EOF indicator as an input ?

ofbodur · 05-13-2013, 08:41 AM

Dear visitor,

I entered the C code in my text editor. When I execute it with gcc, then ./a.out,
I don't know what character or number to enter to the program, which the program will recognize as
End-of-File indicator and finish looping.

At the end, it will give me the number of characters of the string that I entered, which is "nc".

The code is shown below:

Code:

#include<stdio.h>

main()
   {
long nc;
nc=0;

while ( getchar() != EOF )
{
++nc;
}
printf("%ld\n", nc );
}

Any further help is muchly appreciated..

NevemTeve · 05-13-2013, 09:32 AM

Control+D
(at the beginning of a line)

ofbodur · 05-13-2013, 09:40 AM

All right,
You got wright, but I think it is a long combination to use... Can we assign any other character or symbol to use it more practically in other cases? For example if I want to count the number of characters in a text file, other than using awk command, and excluding the spaces between words to the counted number -it is ignored in our case- how is that possible for the programme to know where to end?

ofbodur · 05-13-2013, 09:51 AM

OKEY! I got a new code, belong to some other programmer: It is so useful ..

Code:

#include <stdio.h>
#define IN   1  /* inside a word */
#define OUT  0  /* outside a word */
/* count lines, words, and characters in input */
main()
   {
int c, nl, nw, nc, state;
state = OUT;
nl = nw = nc = 0;
while ((c = getchar()) != EOF) {
++nc;
if (c == ‘\n’)
++nl;
if (c == ‘ ‘ || c == ‘\n’ || c == ‘\t’)
state = OUT;
else if (state == OUT) {
state = IN;
++nw;
           }
       }
printf(“%d %d %d\n”, nl, nw, nc);
}

also answers my question from the beginning..

NevemTeve · 05-13-2013, 12:54 PM

1. Control+D is only two keypress -- not that difficult
2. When processing actual files (not keyboard input), you don't have to do anything, your program will get EOF at the end of the file.