Question

Write a program to draw a Pentagon with blue color inside a window. Using C ++ with Output.

Answer 1

#include<iostream.h>

//Install GLUT If you do not have GLUT installed on your machine
#include<GL/glut.h>                                

//this is car function
void car(){

    //define the color of class
        glClearColor(.3,.16,.4,1);

    //Clear the color of buffer bit
        glClear(GL_COLOR_BUFFER_BIT);
        
    //set the width of line
        glLineWidth(5);

    //start draw polygon from here
        glBegin(GL_POLYGON);

    //set color
        glColor3f(.1,.1,.1);
        
    //set vertex .2 from x axis and .2 from y axis
        glVertex2f(.2,.2);

    //set vertex .2 from x axis and -.2 from y axis
        glVertex2f(.2,-.2);

    //set vertex -.2 from x axis and -.2 from y axis
        glVertex2f(-.2,-.2);

    //set vertex -.2 from x axis and .2 from y axis
        glVertex2f(-.2,.2);

    //set vertex 0 from x axis and .4 from y axis
        glVertex2f(0,.4);

    //End of gl
        glEnd();

    //Flush gl function
        glFlush();      
        
}

//starting of main function
//passing two arguments in it
void main(int argc, char **argv){

    //Initialize gl function and pass two arguments in it
        glutInit(&argc, argv);

    //initialize the size of window
        glutInitWindowSize(600,600);

    //Create window
        glutCreateWindow("CAR");

    //call car function
        glutDisplayFunc(car);

    //call MainLoop
        glutMainLoop();
}