diff --git a/ch_01/exercise_01-06/main.c b/ch_01/exercise_01-06/main.c
new file mode 100644
index 0000000..347f784
--- /dev/null
+++ b/ch_01/exercise_01-06/main.c
@@ -0,0 +1,16 @@
+/*
+ *
+ * Exercise 1-6. Verify that the expression getchar() != EOF is 0 or 1
+ *
+ * Author: Kun Deng
+ */
+
+#include <stdio.h>
+
+
+int main()
+{
+    printf("expression getchar() != EOF is %d\n", (getchar() != EOF));
+
+    return 0;
+}
diff --git a/ch_01/exercise_01-07/main.c b/ch_01/exercise_01-07/main.c
new file mode 100644
index 0000000..f144d4e
--- /dev/null
+++ b/ch_01/exercise_01-07/main.c
@@ -0,0 +1,16 @@
+/*
+ *
+ * Exercise 1-7. Write a program to print the value of EOF.
+ *
+ * Author: Kun Deng
+ */
+
+#include <stdio.h>
+
+
+int main()
+{
+    printf("The value of the symbolic constant EOF is %d\n", EOF);
+
+    return 0;
+}