C++ 很高兴初始化失败

我遇到一个问题，以下代码行总是打印“初始化失败”，然后退出程序：

if (!gladLoadGLLoader((GLADloadproc)glfwGetProcAddress))
{
    std::cout << "Failed to initialize GLAD" << std::endl;
    return -1;
}

if（！gladLoadGLLoader（（GLADloadproc）glfwGetProcAddress））
{
std:：cout您从未通过
glfwMakeContextCurrent（）
将GL上下文设置为当前。与其他GL窗口框架不同，GLFW在
glfwCreateWindow（）
成功时不会将GL上下文设置为当前

:

GLFWwindow*window=glfwCreateWindow（800600，“Lab3”，NULL，NULL）；
如果（窗口==NULL）
{
谢谢，只是错过了教程中的一行。
#include "stdafx.h"
#include <GLFW/glfw3.h>
#include <glad/glad.h>
#include <iostream>

using namespace std;

void init_glfw();

void framebuffer_size_callback(GLFWwindow*, int, int);

int main(int argc, char **argv)
{
    init_glfw();

    GLFWwindow* window = glfwCreateWindow(800, 600, "Lab3", NULL, NULL);

    if (window == NULL)
    {
        cout << "Failed to create GLFW window" << endl;
        glfwTerminate();
        return -1;
    }


    if (!gladLoadGLLoader((GLADloadproc)glfwGetProcAddress))
    {
        std::cout << "Failed to initialize GLAD" << std::endl;
        return -1;
    }

    glViewport(0, 0, 800, 600);
    glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);


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

    glfwTerminate();
    return 0;
}

void init_glfw()
{
    glfwInit();
    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
}

void framebuffer_size_callback(GLFWwindow* window, int width, int height)
{
    glViewport(0, 0, width, height);
}

GLFWwindow* window = glfwCreateWindow(800, 600, "Lab3", NULL, NULL);
if (window == NULL)
{
    cout << "Failed to create GLFW window" << endl;
    glfwTerminate();
    return -1;
}

glfwMakeContextCurrent( window );

if (!gladLoadGLLoader((GLADloadproc)glfwGetProcAddress))
{
    std::cout << "Failed to initialize GLAD" << std::endl;
    return -1;
}