Unexpected work of getchar() function

[ZeUsM]

Hi all!

I'm a beginner in C programming.
I have a problem with compiler or maybe it's incorrect work of function putchar().
So, I run the programm like this

Code: [Select]

#include <stdio.h>

int main(void)
{
 for (;;)
 {
  printf("%d\n", getchar()!=EOF);   
 }
}
and after I put ^Z my programm prints 0 as a loop without break, but the exact same code compiled with other compilers like MSVC and MinGW works different. Programm just prints 0 once. Where could my mistake be?

[DMac]

You have not defined the condition to break the loop.

The following will continue to loop while an entered character is EOF but exit after any other char:

Code: [Select]

char inChar;
 for (;;)
 {
  inChar = getchar();
  printf("%d\n", inChar != EOF);
  if(inChar != EOF) break; 
 }
And this will loop until EOF is encountered

Code: [Select]

char inChar;
 for (;;)
 {
  inChar = getchar();
  printf("%d\n", inChar != EOF);
  if(inChar == EOF) break; 
 }

[ZeUsM]

Yes, it is, but why in other compilers this construction works different? 

[TimoVJL]

Yes, it is, but why in other compilers this construction works different? 

They don't read document n1570.pdf or n1124.pdf
Pelle have opportunity follow those documents, so don't blame him.

If the standard input was at the end-of-file, the function returns EOF and sets the eof indicator (feof) of stdin.

In my simple mind i think that next input should be EOF ?

BTW: MSVC and MinGW gcc use msvcrt.dll