diff --git a/1-7.c b/1-7.c
new file mode 100644
index 0000000..5cc251e
--- /dev/null
+++ b/1-7.c
@@ -0,0 +1,5 @@
+#include <stdio.h>
+int main(){
+  printf("%d\n", EOF);
+  return 0;
+}