first run of very basic executable

CMakeLists.txt

@@ -2,4 +2,6 @@ cmake_minimum_required(VERSION 3.10)
 
 project(Geometry)
 
+include_directories(${PROJECT_SOURCE_DIR}/include)
+
 add_executable(Geometry main.cpp)

include/main.h

@@ -0,0 +1,14 @@
+//
+// Created by nb on 31.12.23.
+//
+
+#ifndef GEOMETRY_MAIN_H
+#define GEOMETRY_MAIN_H
+
+#include <iostream>
+
+using namespace std;
+
+int main();
+
+#endif //GEOMETRY_MAIN_H

main.cpp

@@ -0,0 +1,6 @@
+#include "main.h"
+
+int main(){
+    cout<<"Hello World";
+    return 0;
+}