main.cpp

#include <GL/glew.h>
#include <GLFW/glfw3.h>

#include <iostream>

using std::cout, std::cerr, std::endl;

void glfwErrorCallback(int error, const char* description) {
    cerr << "GLFW Error (" << error << "): " << description << endl;
}

int main() {
    glfwSetErrorCallback(glfwErrorCallback);

    if (!glfwInit()) {
        cerr << "Failed to initialize GLFW" << endl;
        return -1;
    }

    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 4);
    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 6);
    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
    glfwWindowHint(GLFW_RESIZABLE, GLFW_FALSE);

    GLFWwindow* window = glfwCreateWindow(800, 600, "Hello GLEW and GLFW", NULL, NULL);

    if (!window) {
        cerr << "Failed to create GLFW window" << endl;
        glfwTerminate();
        return -1;
    }

    glfwMakeContextCurrent(window);
    glewExperimental = GL_TRUE;

    if (glewInit() != GLEW_OK) {
        cerr << "Failed to initialize GLEW" << endl;
        return -1;
    }

    cout << "OpenGL version: " << glGetString(GL_VERSION) << endl;

    while (!glfwWindowShouldClose(window)) {
        glfwPollEvents();
        glClearColor(3.0f, 0.8f, 0.5f, 1.0f);
        glClear(GL_COLOR_BUFFER_BIT);
        glfwSwapBuffers(window);
    }

    glfwDestroyWindow(window);
    glfwTerminate();

    return 0;
}