Help!!

[able]

I have to print the no. of lines entered by the user, but following code is not working:

 void main()
{
  int c,a=0;
  while((c=getchar())!=EOF)
     if(c=='\n')
      a++;
  printf("%d",a);
  getch();
}

If anybody could help.
Thanx!

[Cactus_Hugger]

That'll return the number of characters entered. Once you get a character (c), check if it's equal to a newline ('\n').

Also: Not "void main()" - It's "int main()"...

Edit: Also, put your c=getchar() in parenthesis. ie:

while((c = getchar()) != EOF)

!= has higher precedence than =, so without parenthesis c will always be 1 or 0.

[dwks]

Don't forget to #include <stdio.h>, for the prototype of printf() and the definition of getchar(), etc.

You shouldn't use getch(); it's non-standard. See this. If you do use it, include <conio.h>.

[edit] As for void main(): http://faq.cprogramming.com/cgi-bin/...&id=1043284376 [/edit]

[able]

I've included all headers. I dunno why its not working. Do we have to input some special character(for EOF) to end input? I just keep pressing enter to end input but nothing happens. Cant anybody help??

[Desolation]

Seems logical to me since EOF is a character inserted by the OS at the end of a file.

[Salem]

> I just keep pressing enter to end input but nothing happens. Cant anybody help??
EOF != enter.

How you signal EOF on stdin depends on your OS (mostly)

For DOS / win32 console, type in ctrl-z (that's hold down ctrl and press z) at the start of a line, and perhaps press return after it.
For Unix / Linux, it is usually ctrl-d

> Seems logical to me since EOF is a character inserted by the OS at the end of a file.
EOF is a state, not a character.
Zero length files can return EOF just as well as any other file.