CMakeLists.txt

@@ -1,7 +1,7 @@
 cmake_minimum_required(VERSION 3.10)
 
 project(
-    something
+    sudoku
     LANGUAGES CXX)
 
 set(CMAKE_CXX_STANDARD 11 CACHE STRING "The C++ standard to use")

src/CMakeLists.txt

@@ -1,5 +1,5 @@
-add_executable(something
-    ./main.cpp
+add_executable(sudoku
+    ./sudoku.cpp
 )
 
-target_include_directories(something PUBLIC ${CMAKE_CURRENT_LIST_DIR})
+target_include_directories(sudoku PUBLIC ${CMAKE_CURRENT_LIST_DIR})

src/main.cpp

@@ -1,6 +0,0 @@
-#include <iostream>
-
-int main(void) {
-    std::cout << "Hello world" << std::endl;
-    return 0;
-}

src/sudoku.cpp

@@ -0,0 +1,7 @@
+#include <iostream>
+
+int main(void) {
+    std::cout << "Sudoku started" << std::endl;
+    std::cout << "Sudoku ended" << std::endl;
+    return 0;
+}