Help with code please.

    void DrawTextureCube(float xPos, float yPos, float zPos)
{
	glPushMatrix();
	glTranslatef(xPos, yPos, zPos);

	glBegin(GL_QUADS);
	glTexCoord2f(0.0f, 0.0f); glVertex3f(-0.5f, -0.5f, -0.5f);
	glTexCoord2f(1.0f, 0.0f); glVertex3f(0.5f, 0.5f, 0.5f);
	glTexCoord2f(1.0f, 1.0f); glVertex3f(0.5f, 0.5f, -0.5f);
	glTexCoord2f(0.0f, 1.0f); glVertex3f(-0.5f, 0.5f, -0.5f);
	glEnd();

	glBegin(GL_QUADS);
	glTexCoord2f(0.0f, 0.0f); glVertex3f(0.5f, -0.5f, 0.5f);
	glTexCoord2f(1.0f, 0.0f); glVertex3f(0.5f, 0.5f, 0.5f);
	glTexCoord2f(1.0f, 1.0f); glVertex3f(-0.5f, -0.5f, 0.5f);
	glTexCoord2f(0.0f, 1.0f); glVertex3f(-0.5f, -0.5f, 0.5f);
	glEnd();

	glBegin(GL_QUADS);
	glTexCoord2f(0.0f, 0.0f); glVertex3f(0.5f, 0.5f, -0.5f);
	glTexCoord2f(1.0f, 0.0f); glVertex3f(0.5f, 0.5f, 0.5f);
	glTexCoord2f(1.0f, 1.0f); glVertex3f(0.5f, -0.5f, 0.5f);
	glTexCoord2f(0.0f, 1.0f); glVertex3f(0.5f, -0.5f, -0.5f);
	glEnd();

	glBegin(GL_QUADS);
	glTexCoord2f(0.0f, 0.0f); glVertex3f(-0.5f, -0.5f, 0.5f);
	glTexCoord2f(1.0f, 0.0f); glVertex3f(-0.5f, 0.5f, 0.5f);
	glTexCoord2f(1.0f, 1.0f); glVertex3f(-0.5f, 0.5f, -0.5f);
	glTexCoord2f(0.0f, 1.0f); glVertex3f(-0.5f, -0.5f, -0.5f);
	glEnd();

	glBegin(GL_QUADS);
	glTexCoord2f(0.0f, 0.0f); glVertex3f(0.5f, -0.5f, 0.5f);
	glTexCoord2f(1.0f, 0.0f); glVertex3f(-.5f, -0.5f, 0.5f);
	glTexCoord2f(1.0f, 1.0f); glVertex3f(-.5f, -0.5f, -0.5f);
	glTexCoord2f(0.0f, 1.0f); glVertex3f(0.5f, -0.5f, -0.5f);
	glEnd();

	glBegin(GL_QUADS);
	glTexCoord2f(0.0f, 0.0f); glVertex3f(0.5f, 0.5f, -0.5f);
	glTexCoord2f(1.0f, 0.0f); glVertex3f(0.5f, -0.5f, -0.5f);
	glTexCoord2f(1.0f, 1.0f); glVertex3f(-0.5f, -0.5f, -0.5f);
	glTexCoord2f(0.0f, 1.0f); glVertex3f(-0.5f, 0.5f, -0.5f);
	glEnd();
	glPopMatrix();
}

LRESULT	CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);	// Declaration For WndProc


GLvoid ReSizeGLScene(GLsizei width, GLsizei height){	// Resize And Initialize The GL Window

	if (height==0){										// Prevent A Divide By Zero By

		height = 1;										// Making Height Equal One

	}

	glViewport(0, 0, width, height);						// Reset The Current Viewport


	glMatrixMode(GL_PROJECTION);						// Select The Projection Matrix

	glLoadIdentity();									// Reset The Projection Matrix


	// Calculate The Aspect Ratio Of The Window

	gluPerspective(45.0f, (GLfloat)width/(GLfloat)height, 0.1f, 100.0f);
						// Reset The Modelview Matrix

}

int InitGL(GLvoid){
	glMatrixMode(GL_PROJECTION);							// Select The Modelview Matrix

	glLoadIdentity();// All Setup For OpenGL Goes Here

	glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
	glShadeModel(GL_SMOOTH);
	glEnable(GL_DEPTH_TEST);
	glEnable(GL_CULL_FACE);
	glFrontFace(GL_CCW);
	glEnable(GL_TEXTURE_2D);

int DrawGLScene(GLvoid){								// Here's Where We Do All The Drawing

	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
	glLoadIdentity();

	glTranslatef(0.0f, 0.0f, -3.0f);
	DrawTextureCube(0.0f, 0.0f, 0.0f);

	if(angle>=360.0f)
		angle = 0.0f;
	angle += 0.2f;
	glFlush();
	SwapBuffers(hDC);										// Everything Went OK

return 0;
}