diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 0000000..0c576dd
Binary files /dev/null and b/.DS_Store differ
diff --git a/.gitea/.DS_Store b/.gitea/.DS_Store
new file mode 100644
index 0000000..d78afd4
Binary files /dev/null and b/.gitea/.DS_Store differ
diff --git a/.gitea/workflows/ci.yml b/.gitea/workflows/ci.yml
index 44ff926..4602555 100644
--- a/.gitea/workflows/ci.yml
+++ b/.gitea/workflows/ci.yml
@@ -6,5 +6,6 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - name: Printing hello
-        run: echo "Hello, world"
+      - uses: actions/checkout@v4
+      - name: build using gcc
+        run: gcc -Wall -Werror main.c
diff --git a/main.c b/main.c
new file mode 100644
index 0000000..80e1b9a
--- /dev/null
+++ b/main.c
@@ -0,0 +1,5 @@
+int main()
+{
+	printf("Halo, Welt!");
+	return 0;
+}