caloh caloh´aáá

#include <GLFW/glfw3.h>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>

int main(void)
{
    GLFWwindow* window;
    if (!glfwInit())
        exit(EXIT_FAILURE);
    window = glfwCreateWindow(640, 480, "Simple example", NULL, NULL);
    if (!window)  {
        glfwTerminate();
        exit(EXIT_FAILURE);
    }
    glfwMakeContextCurrent(window);
    float inval = 0.0f;
    glClearColor(0,0,0,0);
    glClear(GL_COLOR_BUFFER_BIT);

    while (!glfwWindowShouldClose(window))
    {
            glColor3f(1,1,1);
            glBegin(GL_POINTS);
                glVertex2f(-1.0f + inval/5.0f, sinf(inval));
            glEnd();
            glfwSwapBuffers(window);
            glfwPollEvents();
            inval += 0.01f;
    }

    glfwDestroyWindow(window);
    glfwTerminate();
    exit(EXIT_SUCCESS);
}