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diff --git a/1-06_eof-test.c b/1-06_eof-test.c
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+#include <stdio.h>
+
+/* The C Programming Language, 2nd Edition
+ *
+ * Exercise 1-6: Verify that the expression 'getchar() != EOF' is 0 or 1.
+ *
+ * Answer: Easy.
+ */
+
+int main(void) {
+ int c;
+ c = (getchar() != EOF);
+ printf("%d\n", c);
+ return 0;
+}