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-rw-r--r--test/monniaux/des/des.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/test/monniaux/des/des.c b/test/monniaux/des/des.c
index e8fae267..64ccdc5e 100644
--- a/test/monniaux/des/des.c
+++ b/test/monniaux/des/des.c
@@ -1,3 +1,4 @@
+/* From Rosetta Code */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>