Update c-cpp.yml

Author: Celeste-VANDAMME

.github/workflows/c-cpp.yml

@@ -14,19 +14,23 @@ jobs:
     - name: Checkout repository
       uses: actions/checkout@v4
 
-    - name: Compile and Run all C programs in the 'program' folder
+    - name: Compile and Run all C programs recursively
       run: |
-        # Check if any .c files exist to avoid errors
-        if ! ls program/*.c 1> /dev/null 2>&1; then
-          echo "No .c files found in 'program' directory. Skipping."
+        # Enable recursive globbing (the ** pattern)
+        shopt -s globstar
+
+        # Check if any .c files exist in 'program' or its subdirectories
+        if ! ls program/**/*.c 1> /dev/null 2>&1; then
+          echo "No .c files found in 'program' or its subdirectories. Skipping."
           exit 0
         fi
 
-        # Loop through each .c file in the 'program' directory
-        for c_file in program/*.c; do
-          # Create a unique name for the executable from the C file name
-          # For example, "program/app.c" becomes "app_executable"
-          executable_name=$(basename "$c_file" .c)_executable
+        # Loop through each .c file found recursively
+        for c_file in program/**/*.c; do
+          # Create a unique executable name from the full file path to prevent
+          # name collisions if two subfolders have a file with the same name.
+          # Example: "program/day1/app.c" becomes "program_day1_app_executable"
+          executable_name=$(echo "$c_file" | sed 's|/|_|g; s|\.c$||')_executable
           
           echo "---"
           echo "Compiling: $c_file"