use atexit

main.cpp

@@ -1,3 +1,5 @@
+#include <cstdlib>
+
 #include <GLFW/glfw3.h>
 
 #include <imgui.h>
@@ -8,23 +10,33 @@ int main(int, char**)
 {
     if (!glfwInit())
         return 1;
+    std::atexit(glfwTerminate);
     glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
     glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
-    GLFWwindow* window = glfwCreateWindow(1900, 720, "microsa", nullptr, nullptr);
+    static GLFWwindow* window = glfwCreateWindow(1900, 720, "microsa", nullptr, nullptr);
     if (window == nullptr) {
-        glfwTerminate();
         return 1;
     }
+    static auto DestroyWindow = []() {
+        glfwDestroyWindow(window);
+    };
+    std::atexit(DestroyWindow);
     glfwMakeContextCurrent(window);
     glfwSwapInterval(1);
 
     IMGUI_CHECKVERSION();
     ImGui::CreateContext();
+    static auto ImGuiDestroyContext = []() {
+        ImGui::DestroyContext();
+    };
+    std::atexit(ImGuiDestroyContext);
     ImGuiIO& io = ImGui::GetIO();
     io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;
     ImGui::StyleColorsDark();
     ImGui_ImplGlfw_InitForOpenGL(window, true);
+    std::atexit(ImGui_ImplGlfw_Shutdown);
     ImGui_ImplOpenGL3_Init("#version 130");
+    std::atexit(ImGui_ImplOpenGL3_Shutdown);
 
     int waterfall_width = 1600;
     int waterfall_height = 700;
@@ -86,12 +98,5 @@ int main(int, char**)
         glfwSwapBuffers(window);
     }
 
-    ImGui_ImplOpenGL3_Shutdown();
-    ImGui_ImplGlfw_Shutdown();
-    ImGui::DestroyContext();
-
-    glfwDestroyWindow(window);
-    glfwTerminate();
-
     return 0;
 }