6. Graphics Program to display a square filled with color.

#include <GL/gl.h>

#include <GL/glut.h>

#include <math.h>

void display()

{

glClearColor(0.0f, 0.0f, 0.0f, 1.0f);

glClear(GL_COLOR_BUFFER_BIT);

glBegin(GL_QUADS);

glColor3f(0.0f, 0.0f, 1.0f);

glVertex2f(-0.5f, -0.5f);

glVertex2f( 0.5f, -0.5f);

glVertex2f( 0.5f,  0.5f);

glVertex2f(-0.5f,  0.5f);

glEnd();

glFlush();

}

int main(int argc, char** argv)

{

glutInit(&argc, argv);

glutCreateWindow("OpenGL Setup Test");

glutInitWindowSize(320, 320);

glutInitWindowPosition(50, 50);

glutDisplayFunc(display);

glutMainLoop();

return 0;

}