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diff --git a/examples/01-shake128/main.c b/examples/01-shake128/main.c
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+//
+// shake128-example: hash contents of DATA with SHAKE128 and print first
+// 200 bytes of SHAKE128 hash of data to standard output.
+//
+#include <stdint.h>
+#include <stdio.h>
+#include "hex.h"
+#include "sha3.h"
+
+// test data
+static const uint8_t DATA[] = "this is some test data";
+
+int main() {
+ // hash data
+ uint8_t buf[200] = { 0 };
+ shake128_xof_once(DATA, sizeof(DATA), buf, sizeof(buf));
+
+ // print result to stdout
+ printf("SHAKE128 (200 bytes): ");
+ hex_write(stdout, buf, sizeof(buf));
+ printf("\n");
+
+ return 0;
+}