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-rwxr-xr-xcores/arduino/WProgram.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/cores/arduino/WProgram.h b/cores/arduino/WProgram.h
index 5f78de2..20650df 100755
--- a/cores/arduino/WProgram.h
+++ b/cores/arduino/WProgram.h
@@ -1,3 +1,6 @@
+#ifndef WProgram_h
+#define WProgram_h
+
#include <stdlib.h>
#include <string.h>
#include <math.h>
@@ -17,3 +20,5 @@ long random(long, long);
void randomSeed(unsigned int);
long map(long, long, long, long, long);
#endif
+
+#endif \ No newline at end of file