diff --git a/deno_run_wasm/c/build_sample_c.sh b/deno_run_wasm/c/build_sample_c.sh
new file mode 100644
index 0000000..b694371
--- /dev/null
+++ b/deno_run_wasm/c/build_sample_c.sh
@@ -0,0 +1 @@
+clang --target=wasm32 --no-standard-libraries -Wl,--export-all -Wl,--no-entry -o sample.wasm sample.c
diff --git a/deno_run_wasm/c/sample.c b/deno_run_wasm/c/sample.c
new file mode 100644
index 0000000..39a290b
--- /dev/null
+++ b/deno_run_wasm/c/sample.c
@@ -0,0 +1,3 @@
+int add(int a, int b) {
+  return a + b;
+}