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• undefined reference to `WinMain@16' when running cpp program

  Im installed mingw and vs code on my system , i followed all the steps,added to environment variable and all but when im running simple hello world program it gives this error: c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../libmingw32.a(main.o):(.text.startup+0xc0): undefined reference to `WinMain@16' collect2.exe: error: ld returned 1 exit status My code : #include<iostream using namespace std;

  int main(){

  cout<<"Hello World"<<endl;
  return 0;
  

  }
• Vulkan SDK using VSCode and MinGW64 on Windows

  I've just started to learn to use Vulkan, but have run into some problems getting it to work on VSCode. I am currently using Vulkan 1.2.162.1, MinGW-64 8.1.0, g++ and VSCode. Although https://vulkan-tutorial.com/ uses Visual Studio, I wanted to use VS Code instead as my development environment. Do I have to use visual studio to resolve this problem?

  Test.cpp

  #define GLFW_INCLUDE_VULKAN
  #include <GLFW/glfw3.h>
  
  #define GLM_FORCE_RADIANS
  #define GLM_FORCE_DEPTH_ZERO_TO_ONE
  #include <glm/vec4.hpp>
  #include <glm/mat4x4.hpp>
  
  #include <iostream>
  
  int main() {
      glfwInit();
  
      glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
      GLFWwindow* window = glfwCreateWindow(800, 600, "Vulkan window", nullptr, nullptr);
  
      uint32_t extensionCount = 0;
      vkEnumerateInstanceExtensionProperties(nullptr, &extensionCount, nullptr);
  
      std::cout << extensionCount << " extensions supported\n";
  
      glm::mat4 matrix;
      glm::vec4 vec;
      // auto test = matrix * vec;
  
      while(!glfwWindowShouldClose(window)) {
          glfwPollEvents();
      }
  
      glfwDestroyWindow(window);
  
      glfwTerminate();
  
      return 0;
  }
  

  tasks.json

  {
      "version": "2.0.0",
      "tasks": [
          {
              "type": "cppbuild",
              "label": "C/C++: g++.exe build active file",
              "command": "C:/Program Files/mingw-w64/mingw64/bin/g++.exe",
              "args": [
                  "-g",
                  // "-Wall",
                  "${file}",
                  "-IC:/Users/kimda/Desktop/Projects/C++/VulkanLibraries/glfw-3.3.2.bin.WIN64/include",
                  "-IC:/VulkanSDK/1.2.162.1/Include",
                  "-IC:/Users/kimda/Desktop/Projects/C++/VulkanLibraries/glm",
                  "-LC:/Users/kimda/Desktop/Projects/C++/VulkanLibraries/glfw-3.3.2.bin.WIN64/lib-mingw-w64",
                  "-LC/VulkanSDK/1.2.162.1/Lib",
                  "-o",
                  "${fileDirname}\\${fileBasenameNoExtension}.exe",
                  "-lglfw3",
                  "-lvulcan-1",
                  "-lgdi32"
              ],
              "options": {
                  "cwd": "C:/Program Files/mingw-w64/mingw64/bin"
              },
              "problemMatcher": [
                  "$gcc"
              ],
              "group": {
                  "kind": "build",
                  "isDefault": true
              },
              "detail": "compiler: \"C:/Program Files/mingw-w64/mingw64/bin/g++.exe\""
          }
      ]
  }
  

  When I run build task, I get the following error:

  Starting build...
  Build finished with errors(s):
  C:/Program Files/mingw-w64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lvulcan-1
  collect2.exe: error: ld returned 1 exit status
  
• Why does scanf() gets doubled and joined together as one?

  I'm using Codeblocks IDE & mingw compiler for this C project.

  I know that it is a matter of compiler which is why some of this program must be written in accord to the current compiler that I'm using; this program is from an old book I have, which prompts the user to use Turbo C.

  As such, I converted flushall() with fflush(NULL), and no more error were returned.

  Still, for some reason, the first 2 scanf() are 'joined' together, as such, the very first (supposedly) input gets ignored.

  #include <stdio.h>
  #include <conio.h>
  #include <string.h>
  
  void main() {
      int i, n;
      char name[15][20];
      void namesort(char name[15][20], int);
      ("cls");
  
      printf("\n\tEnter the number of names to be entered: ");
      scanf("%d", &n);
  
      printf("\n\n\t=====Input Data=====\n");
      for(i=0; i<n; i++) {
          fflush(NULL);
          printf("\tEnter a name: ");
          gets(name[i]);
      }
  
      namesort(name, n);
      printf("\n\n\t=====After Sorting=====\n");
      for(i=0; i<n; i++) {
          printf("%s\n\t", name[i]);
      }
      getch();
  }
  
  void namesort(char name[15][20], int n) {
      int i, j;
      char *temp;
  
      for(i=0; i<n; i++) {
          if(strcmp(name[j],name[j+1]) > 0) {
              strcpy(temp, name[j]);
              strcpy(name[j], name[j+1]);
              strcpy(name[j+1], temp);
          }
      }
  }