codechef IDE OUTPUT

I wanted to take string input from user till user enters EOF.

code:

                                                                                                                                   #include <stdio.h>

 int main(void)
   {
// your code goes here
int ch;
//char c;
ch=getchar();
char s[100];
int count=0;
while(ch!=EOF)
{

    s[count]=ch;
    count+=1;
    ch=getchar();
    printf("asciivalue=%d %c\n",ch,ch);
}
printf("hello");
printf("%d",count);

return 0;

}

Input

 hello
 sgf

Outpt

 asciivalue=101 e
 asciivalue=108 l
 asciivalue=108 l
 asciivalue=111 o
 asciivalue=10

 asciivalue=115 s
 asciivalue=103 g
 asciivalue=102 f
 asciivalue=10

 asciivalue=10

 asciivalue=10

 asciivalue=-1

I dont understand why newline character is displayed 2 times extra at the end(10) before EOF(-1).

Also, one more doubt why hello and count is not displayed?? plz explain thanks