count the number of lines, words, and characters within an input

Question

Right now I am going through a book on C and have come across an example in the book which I cannot get to work.

#include 
#define IN 1
#defin         


        

Answer 1

It's waiting for input on stdin. Either redirect a file into it (myprog < test.txt) or type out the data and hit Ctrl-D (*nix) or Ctrl-Z (Windows).