Added dumbtest.c to demonstrate a test for the boolean value of != EOF. Numerous modifications to ex1_6-getchar.c to that end before dumbtest.c became its own project- most modifications reverted.

KNR C/dumbtest.c

@@ -0,0 +1,9 @@
+#include <stdio.h>
+
+int main(){
+	
+	int c = getchar() != EOF;
+	printf("%d", c);
+
+return 0;
+}