Added main.c

.gitea/workflows/ci.yml

@@ -4,5 +4,6 @@ jobs:
     build:
         runs-on: ubuntu-latest
         steps:
-            - name: Printing hello
+            - uses: actions/checkout@v4
-              run: echo "Hello, "
+            - name: build using gcc
+              run: gcc -Wall -Werror main.c

main.c

@@ -0,0 +1,5 @@
+int main()
+{
+    printf("Halo, Welt!");
+    return 0;
+}