Linker issue when using OpenGL on VS 2017

Question

On Windows, I set up Visual Studio 2017 for OpenGL and added Includes and Libraries folders (dedicated for OpenGl_Stuff) to Include Directories and Library Directories and also glfw3.lib opengl32.lib to Additional Dependencies, all to the Properties of the project

Then created an Empty Project named opengl_1 for running this and this codes. They ran successfully.

But there is an issue.
I get these 13 linker errors:

*Severity Code Description Project File Line Suppression State

Error LNK2019 unresolved external symbol _gl3wInit referenced in function _main Opengl_1 C:\Users\Abbasi\documents\visual studio 2017\Projects\Opengl_1\Opengl_1\Main.obj 1*

Error LNK2019 unresolved external symbol _LoadShaders referenced in function "void __cdecl init(void)" (?init@@YAXXZ) Opengl_1 C:\Users\Abbasi\documents\visual studio 2017\Projects\Opengl_1\Opengl_1\Main.obj 1*

Error LNK2001 unresolved external symbol _gl3wDrawArrays Opengl_1 C:\Users\Abbasi\documents\visual studio 2017\Projects\Opengl_1\Opengl_1\Main.obj 1*

Error LNK2001 unresolved external symbol _gl3wBindBuffer Opengl_1 C:\Users\Abbasi\documents\visual studio 2017\Projects\Opengl_1\Opengl_1\Main.obj 1*

Error LNK2001 unresolved external symbol _gl3wEnableVertexAttribArray Opengl_1 C:\Users\Abbasi\documents\visual studio 2017\Projects\Opengl_1\Opengl_1\Main.obj 1*

Error LNK2001 unresolved external symbol _gl3wUseProgram Opengl_1 C:\Users\Abbasi\documents\visual studio 2017\Projects\Opengl_1\Opengl_1\Main.obj 1*

Error LNK2001 unresolved external symbol _gl3wVertexAttribPointer Opengl_1 C:\Users\Abbasi\documents\visual studio 2017\Projects\Opengl_1\Opengl_1\Main.obj 1*

Error LNK2001 unresolved external symbol _gl3wClearBufferfv Opengl_1 C:\Users\Abbasi\documents\visual studio 2017\Projects\Opengl_1\Opengl_1\Main.obj 1*

Error LNK2001 unresolved external symbol _gl3wBindVertexArray Opengl_1 C:\Users\Abbasi\documents\visual studio 2017\Projects\Opengl_1\Opengl_1\Main.obj 1*

Error LNK2001 unresolved external symbol _gl3wGenVertexArrays Opengl_1 C:\Users\Abbasi\documents\visual studio 2017\Projects\Opengl_1\Opengl_1\Main.obj 1*

Error LNK2001 unresolved external symbol _gl3wCreateBuffers Opengl_1 C:\Users\Abbasi\documents\visual studio 2017\Projects\Opengl_1\Opengl_1\Main.obj 1*

Error LNK2001 unresolved external symbol _gl3wNamedBufferStorage Opengl_1 C:\Users\Abbasi\documents\visual studio 2017\Projects\Opengl_1\Opengl_1\Main.obj 1*

Error LNK1120 12 unresolved externals Opengl_1 C:\Users\Abbasi\documents\visual studio 2017\Projects\Opengl_1\Debug\Opengl_1.exe 1*

When I want to run the following code:

#include <iostream>
using namespace std;
#include "vgl.h"
#include "LoadShaders.h"

enum VAO_IDs { Triangles, NumVAOs };
enum Buffer_IDs { ArrayBuffer, NumBuffers };
enum Attrib_IDs { vPosition = 0 };
GLuint VAOs[NumVAOs];
GLuint Buffers[NumBuffers];
const GLuint NumVertices = 6;
//--------------------------------------------------------------------
//
// init
//
void
init(void)
{
    static const GLfloat vertices[NumVertices][2] =
    {
        { -0.90, -0.90 }, // Triangle 1
        { 0.85, -0.90 },
        { -0.90, 0.85 },
        { 0.90, -0.85 }, // Triangle 2
        { 0.90, 0.90 },
        { -0.85, 0.90 }
    };
    glCreateBuffers(NumBuffers, Buffers);
    glNamedBufferStorage(Buffers[ArrayBuffer], sizeof(vertices),
        vertices, 0);
    ShaderInfo shaders[] = {
        { GL_VERTEX_SHADER, "triangles.vert" },
        { GL_FRAGMENT_SHADER, "triangles.frag" },
        { GL_NONE, NULL }
    };
    GLuint program = LoadShaders(shaders);
    glUseProgram(program);
    glGenVertexArrays(NumVAOs, VAOs);
    glBindVertexArray(VAOs[Triangles]);
    glBindBuffer(GL_ARRAY_BUFFER, Buffers[ArrayBuffer]);
    glVertexAttribPointer(vPosition, 2, GL_FLOAT,
        GL_FALSE, 0, BUFFER_OFFSET(0));
    glEnableVertexAttribArray(vPosition);
}
//--------------------------------------------------------------------
//
// display
//
void
display(void)
{
    static const float black[] = { 0.0f, 0.0f, 0.0f, 0.0f };
    glClearBufferfv(GL_COLOR, 0, black);
    glBindVertexArray(VAOs[Triangles]);
    glDrawArrays(GL_TRIANGLES, 0, NumVertices);
}
//--------------------------------------------------------------------
//
// main
//
int
main(int argc, char** argv)
{
    glfwInit();
    GLFWwindow* window = glfwCreateWindow(640, 480, "Triangles", NULL,
        NULL);
    glfwMakeContextCurrent(window);
    gl3wInit();
    init();

    while (!glfwWindowShouldClose(window))
    {
        display();
        glfwSwapBuffers(window);
        glfwPollEvents();
    }

    glfwDestroyWindow(window);
    glfwTerminate();
}

How to solve this please?