Thread: getchar ignores EOF

Hi
I've built a project,but one part of it isn't working the way I expect it to be:

Code:

for (i = 0; i < N; i++)
    {
        buffer[i] = getchar();
        if(buffer[i] == EOF)
        {    
            fprintf(stderr,"input error!\n");
            free(buffer);
            return;
        }
    }

assuming that all variables are declared/defined (argument N is the size of an array I want to fill,and is passed from main)
the problem is,let N be 3 (the value doesn't really matter),if there's nothing on input,it prints error,finish program-OK, if there's only 1 char,it does the same-OK,but if there are 2 chars (though the array is still not full) it doesn't print anything,but finish.I think it should work as well because next char should be EOF,isn't it? I use input from a text file,which should not put an \0 at the end of a string, so I really don't understand where the mistake is
- the loop is a part of an external void function called from main
I'll be thankful for any help

well, I forgot to tell you that actually I stored the result in an int (it's a school project and they told us EOF might confuse if only 8bits instead of 32 is used)...so is there any other solution,why it is still not working? edit: my fault data type was int not char

yes,exactly,buffer is an array of ints
this should demonstrate the problem:

Code:

#include<stdio.h>
#include<stdlib.h>

int main(int argc, char *argv[])
{
    int N = atoi(argv[1]);
    int *buffer = malloc(N*sizeof(int));
    
    for (int i = 0;i < N; i++)
    {
        buffer[i] = getchar();
        if (buffer[i] == EOF )
        {
            fprintf(stderr,"input error\n");
            free(buffer);
            return 1;
        }
        
    }
free(buffer);
return 0;
}

so like I said, if array meets EOF at (N-1) position,it doesn't print anything,but it should..
- I'm using linux mint, programming in gedit,compiling with gcc

I think OP is talking about input:
ab # follow by EOF. does not print 'input error'

bayint Naung: I quite don't understand,how did you mean it? if have only 'ab' in a file,I guess those are only two chars,is there anything more than these??? if not,how should I rewrite my program to make it work the way I want?

I would bet that you text editor put newline in file.
When you see N-1 char in file, there's newline char also. total N chars in file....

yeah,exactly,I didn't understand,actually my friends too,today I asked my lecturer and he showed me this as well (gedit put a newline in file),so you were right guys,thanks a lot,what's more,as the lecturer said,it wasn't even mistake it was an expected behaviour and was correct,though thx again