搖晃的紅酒杯

#include <stdio.h>
FILE *fout=NULL, *fin=NULL;
int main(int argc, char**argv)
{
    if(fout==NULL) fout=fopen("output.txt", "w+");
    ///printf("Hello world");
    fprintf(fout, "Hellow world");
}

#include <GL/glut.h>

#include <stdio.h>

FILE *fout=NULL, *fin=NULL;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT |GL_DEPTH_BUFFER_BIT);

    glutSolidTeapot(0.3);

    glutSwapBuffers();

}

void motion(int x, int y)

{

    if(fout==NULL) fout=fopen("output.txt","w+");

    fprintf(fout, "%d %d\n", x, y);;

}

int main(int argc, char**argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("3D");

    glutDisplayFunc(display);

    glutMotionFunc(motion);

    glutMainLoop();

}