nigu

#include <GL/glut.h>
void myDisplay(){
	glClearColor(0, 0, 0, 1);
	glClear(GL_COLOR_BUFFER_BIT);

	glBegin(GL_LINES);
	glColor3f(1,0,0);
	glVertex2f(0, 0);
	glVertex2f(-10, 0);
	glEnd();

	glBegin(GL_LINES);
	glColor3f(0,1,1);
	glVertex2f(0,0);
	glVertex2f(0,-10);
	glEnd();

	glBegin(GL_LINES);
	glColor3f(1,0,1);
	glVertex2f(0,0);
	glVertex2f(10,0);
	glEnd();

	glBegin(GL_LINES);
	glColor3f(0,1,-1);
	glVertex2f(0,0);
	glVertex2f(0,10);
	glEnd();

	glBegin(GL_LINES);
	glColor3f(-1,1,0);
	glVertex2f(0.5,-0.5);
	glVertex2f(0.5,0.5);
	glEnd();

	glBegin(GL_LINES);
	glColor3f(0,-1,1);
	glVertex2f(-0.5,-0.5);
	glVertex2f(-0.5,0.5);
	glEnd();

	glBegin(GL_LINES);
	glColor3f(1,-1,0);
	glVertex2f(-0.5,0.5);
	glVertex2f(0.5,0.5);
	glEnd();

	glBegin(GL_LINES);
	glColor3f(-1,1,0);
	glVertex2f(-0.5,-0.5);
	glVertex2f(0.5,-0.5);
	glEnd();

	glutSwapBuffers();
}

int main(int* argc, char**argv){
	glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB);
	glutInitWindowSize(500, 500);
	glutInitWindowPosition(0, 0);
	glutCreateWindow("First Open GL");
	glutDisplayFunc(myDisplay);
	glutMainLoop();
	return 0;

}