Convert app to c++

.vscode/launch.json

@@ -26,7 +26,8 @@
                     "text": "-gdb-set disassembly-flavor intel",
                     "ignoreFailures": true
                 }
-            ]
+            ],
+            "preLaunchTask": "CMake: build"
         }
 
 

.vscode/tasks.json

@@ -0,0 +1,19 @@
+{
+	"version": "2.0.0",
+	"tasks": [
+		{
+			"type": "cmake",
+			"label": "CMake: build",
+			"command": "build",
+			"targets": [
+				"all"
+			],
+			"group": {
+				"kind": "build",
+				"isDefault": true
+			},
+			"problemMatcher": [],
+			"detail": "CMake template build task"
+		}
+	]
+}

CMakeLists.txt

@@ -1,8 +1,11 @@
 # Specifies the minimum version of CMake required to configure the project.
 cmake_minimum_required(VERSION 3.10)
 
+set(SMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
 # Defines the name of the project. This name is used for various CMake targets and variables.
-project(cmake_tutorial C)
+project(cmake_tutorial C CXX)
 
 # Configures CMake to generate a 'compile_commands.json' file in the build directory.
 # This file is used by many IDEs and language servers (e.g., VS Code, CLion)
@@ -17,7 +20,7 @@ add_subdirectory(libs/lib2)
 add_subdirectory(libs/lib3)
 
 # Defines an executable target named 'cmake_tutorialApp' from the source file 'src/app.c'.
-add_executable(cmake_tutorial src/app.c)
+add_executable(cmake_tutorial src/app.cpp)
 
 # Links the executable target 'cmake_tutorialApp' to the specified libraries.
 # - PRIVATE: Indicates that 'cmake_tutorialApp' needs these libraries for its own compilation/linking,

libs/lib1/inc/lib1.h

@@ -3,4 +3,12 @@
 // are part of lib1.h's public interface. For simple calls in lib1.c,
 // including in lib1.c is sufficient.
 
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
 void lib1_function();
+
+#if defined(__cplusplus)
+}
+#endif

libs/lib2/inc/lib2.h

@@ -1,3 +1,11 @@
 #pragma once
 
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
 void lib2_function(); // Function declaration for lib2
+
+#if defined(__cplusplus)
+}
+#endif

libs/lib3/inc/lib3.h

@@ -1,6 +1,10 @@
 #pragma once
 #include <stdio.h> // Standard I/O header is needed here because printf is used within this header-only function.
 
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
 // Declared as static to prevent multiple definition errors.
 // Since this is a header-only function, it will be included and compiled
 // into every translation unit that includes lib3.h. 'static' limits its
@@ -9,3 +13,7 @@ static void lib3_function()
 {
   printf("This is a function from Header-Only Library 3.\n");
 }
+
+#if defined(__cplusplus)
+}
+#endif

src/app.c

@@ -1,13 +0,0 @@
-#include "lib1.h"  // Header for Library 1 (static library)
-#include "lib2.h"  // Header for Library 2 (static library)
-#include "lib3.h"  // Header for Library 3 (header-only library)
-#include <stdio.h> // Standard I/O functions like printf
-
-int main() {
-  printf("Hello from main application!\n");
-  // Call functions from the linked libraries
-  lib1_function();
-  lib2_function();
-  lib3_function();
-  return 0;
-}

src/app.cpp

@@ -0,0 +1,14 @@
+#include "lib1.h" // Header for Library 1 (static library)
+#include "lib2.h" // Header for Library 2 (static library)
+#include "lib3.h" // Header for Library 3 (header-only library)
+#include <iostream>
+
+int main()
+{
+  std::cout << "Hello from main application!" << std::endl;
+  // Call functions from the linked libraries
+  lib1_function();
+  lib2_function();
+  lib3_function();
+  return 0;
+}