The following program is normal on some machines, but not normal on some machines, why?
int main ()
{
Char C;
While ((c = getchar ())! = EOF)
PUTCHAR (C);
Return 0;
}
A: Because getc and getchar returned, it is intellectual, not a character type. Since EOF is often defined as -1, if the system uses a symbolic character type, it can work. If you are using an unsigned character type, the value returned by getchar will never be -1 after saving to c, and the program will fall into an infinite loop.
