# include <stdio.h>
# include <conio.h>
# include <ctype.h>
main ()
{
int x;
printf ("Press enter, spaces or tabs to quit \ n");
do
{
x = getche ();
if (isspace (x))
break;
if (isalpha (x))
printf ("is the letter \ n");
else
printf ("not the letter \ n");
}
while (1);
}
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