openGL

#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <glut.h>
#define drawOneLine(x1,y1,x2,y2)glBegin(GL_LINES);\
    glVertex2f((x1),(y1)); glVertex2f((x2),(y2)); glEnd();

void garis(){
    glClear(GL_COLOR_BUFFER_BIT);
    glLineWidth(10);
    glEnable(GL_LINE_STIPPLE);
    glLineStipple(1,0x00ff);
    glBegin(GL_LINES);
    glColor3f(1,1,0);
    drawOneLine(-0.1,0.0,0.5,0.0);
    glEnd();
    glFlush();
}

int main(int argc, char** argv)
{
    printf("saya mau buat garis gaes");
    glutCreateWindow("Garis Suci");
    glutDisplayFunc(garis);
    glutMainLoop();
}