diff --git a/.github/workflows/build_test.yml b/.github/workflows/build_test.yml
new file mode 100644
index 00000000..aaabf3c7
--- /dev/null
+++ b/.github/workflows/build_test.yml
@@ -0,0 +1,20 @@
+name: Build Check
+
+on:
+  pull_request:
+    branches:
+      - '*'
+  workflow_dispatch:
+    
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - name: install-build-essential
+      run: sudo apt-get update && sudo apt-get install build-essential libbsd-dev -y
+
+    - name: checkout
+      uses: actions/checkout@v3
+
+    - name: build
+      run: make all
\ No newline at end of file
diff --git a/.github/workflows/build_test.yml.txt b/.github/workflows/build_test.yml.txt
deleted file mode 100644
index d5babadc..00000000
--- a/.github/workflows/build_test.yml.txt
+++ /dev/null
@@ -1,16 +0,0 @@
-name: Build Check
-
-on:
-    
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    steps:
-    - name: install-build-essential
-      run:
-
-    - name: checkout
-      uses:
-
-    - name: build
-      run:
\ No newline at end of file
diff --git a/README.md b/README.md
index 2a675698..94daba2c 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,8 @@
 # learn-github-actions
 2023 年 11 月 11 日 18 時開催「30分で GitHub actions 使えるようになってみようの会！」で使用するレポジトリ
 
+追加
+追加
+
 # Google slide (updating)
 https://docs.google.com/presentation/d/14aty4uQ2G0SmEt-1r3HEEAUvUVd7HYNy_lmaNhS8PvI/edit?usp=sharing
\ No newline at end of file
diff --git a/src/main.c b/src/main.c
index 2011a2d8..29b90251 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,4 +1,4 @@
 int main(void) {
-    int i;
+    //int i;
     return 0;
 }
\ No newline at end of file