실행파일 작동이 중지됩니다

#include<iostream>
#include<fstream>
#include"triangle.h"
#include<GL/glut.h>
//implement here - include header files 
 
float** position; //data to save vertices position.
 
void renderScene(void) {
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
	glClearColor(1, 1, 1, 1);
	glBegin(GL_TRIANGLES);
	glVertex3f(position[0][0], position[0][1], position[0][2]);
	glVertex3f(position[1][0], position[1][1], position[1][2]);
	glVertex3f(position[2][0], position[2][1], position[2][2]);
	glEnd();
	//implement here - draw triangle, 
 
	glutSwapBuffers();
}
 
void main(int argc, char **argv) {
	int m = 3, n = 3; 
	float** position = new float*[m];
	for (int i = 0; i < m; ++i){
		position[i] = new float[n];
	}
	//implement here - position is 3x3 array, allocate the memory.
	readFile(position);
	for (int i = 0; i < m; ++i)
		delete[]position[i];
	delete[]position;
	// init GLUT and create Window
	glutInit(&argc, argv);
	glutInitDisplayMode(GLUT_DEPTH | GLUT_DOUBLE | GLUT_RGBA);
	glutInitWindowPosition(100, 100);
	glutInitWindowSize(320, 320);
	glutCreateWindow("practice_03!");
 
	// register callbacks
	glutDisplayFunc(renderScene);
 
	// enter GLUT event processing cycle
	glutMainLoop();
}