Add main.c

Signed-off-by: a1012112796 <1012112796@qq.com>

.drone.yml

@@ -0,0 +1,18 @@
+---
+kind: pipeline
+type: docker
+name: build_linux_test
+
+trigger:
+  event:
+    - pull_request
+    - push
+
+steps:
+  - name: build_test
+    image: gcc
+    commands:
+      - echo "start test"
+      - gcc main.c -o test
+      - ./test
+