Update c-cpp.yml

Author: H5JKey

.github/workflows/c-cpp.yml

@@ -14,7 +14,7 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - name: cmake
-      run: cmake
+      run: mkdir build && cd build && cmake ..
     - name: make
       run: make
     - name: make test