How to exit a while-loop?

Question

#include <stdio.h>
main(void) {
   char ch;
   while (1) {   
      if ((ch = getchar()) != EOF) 
      {
         break;
      }
      putchar(ch);
   }
   return 0;
}

How do I escape from this while? I had tried with EOF but it didn't work.

Answer 1

I think you mean:

int ch;

Because EOF won't fit in a char.

Also:

if ((ch=getchar()) == EOF)
       break;

Your logic is backwards.