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-rw-r--r--textscreen/examples/calculator.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/textscreen/examples/calculator.c b/textscreen/examples/calculator.c
index b8fefaa3..79e7e7f6 100644
--- a/textscreen/examples/calculator.c
+++ b/textscreen/examples/calculator.c
@@ -1,5 +1,6 @@
#include <stdio.h>
+#include <stdlib.h>
#include <string.h>
#include "textscreen.h"