testc

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <GL/glut.h>  // GLUT, includes glu.h and gl.h


float randomFloat()
{

      float r = (float)rand() / (float)RAND_MAX;
      return r;
}


void display() {
   int x , y=0;

	glClearColor(1.0f, 1.0f, 0.0f, 1.0f); // Set background color to black and opaque
    glClear(GL_COLOR_BUFFER_BIT);         // Clear the color buffer

 //   glScalef( 1.1, 1.1 ,1);
 // glTranslatef(1.0f, -0.5f, 0.0f);
   glBegin(GL_TRIANGLES);              // Each set of 4 vertices form a quad




   // Red

/*************************************************************/
	  glColor3f(randomFloat(), 0.0f, 0.0f); // Red
      glVertex2i(50, 50);
      glColor3f(0.0f, randomFloat(), 0.0f); // Green
      glVertex2i(200, 50);
      glColor3f(0.0f, 0.0f, randomFloat()); // Blue
      glVertex2i(100 ,100);

/***********************************************************/
	  glEnd();












   glFlush();  // Render now
}


void mouse(int button, int state, int x, int y) {
   if (button == GLUT_LEFT_BUTTON && state == GLUT_DOWN) { // Pause/resume
  //    glClearColor(1.0f, 0.0f, 0.0f, 1.0f); // Set background color to black and opaque
   // glClear(GL_COLOR_BUFFER_BIT);         // Clear the color buffer
   display() ;


   }
}



/* Main function: GLUT runs as a console application starting at main()  */
int main(int argc, char** argv) {
   glutInit(&argc, argv);                 // Initialize GLUT
   glutCreateWindow("OpenGL Setup Test"); // Create a window with the given title
   glutInitWindowSize(320, 320);   // Set the window's initial width & height
   glutInitWindowPosition(50, 50); // Position the window's initial top-left corner

   glutDisplayFunc(display); // Register display callback handler for window re-paint
   gluOrtho2D(0, 320, 0, 320);
   /////////////////////////////////////////////
//   glEnable(GL_LINE_STIPPLE); glLineStipple(1,0x00AA);
 //  glutMouseFunc(mouse); //MOUSE
   srand(time(NULL));
   glutMainLoop();           // Enter the infinitely event-processing loop

   return 0;
}