I have got a tank sprite to rotate left and right but I want it to move up and down and left and right. here is the code I am working on.

void tankmove()
{
	glEnable(GL_TEXTURE_2D);

	glBindTexture(GL_TEXTURE_2D, texture[0]);

	if (direction[1] == 1)
	{
	glBindTexture(GL_TEXTURE_2D, texture[1]);
	direction[1] = 0;
	}

	if (direction[2] == 1)
	{
	glBindTexture(GL_TEXTURE_2D, texture[2]);
	direction[2] = 0;
	}

	if (direction[3] == 1)
	{
	glBindTexture(GL_TEXTURE_2D, texture[3]);
	direction[3] = 0;
	}

	if (direction[4] == 1)
	{
	glBindTexture(GL_TEXTURE_2D, texture[0]);
	direction[4] = 0;
	}

	if (direction_two[1] == 1)
	{
		glBindTexture(GL_TEXTURE_2D, texture[3]);
		direction_two[1] = 0;
	}

	if (direction_two[2] == 1)
	{
		glBindTexture(GL_TEXTURE_2D, texture[2]);
		direction_two[2] = 0;
	}

	if (direction_two[3] == 1)
	{
		glBindTexture(GL_TEXTURE_2D, texture[1]);
		direction_two[3] = 0;
	}

	if (direction_two[4] == 1)
	{
		glBindTexture(GL_TEXTURE_2D, texture[0]);
		direction_two[4] = 0;
	}

	glBegin(GL_QUADS);
	glTexCoord2f(0.0f, 0.0f);
	glVertex2f(5.0f, 5.0f);
	glTexCoord2f(1.0f, 0.0f);
	glVertex2f(-5.0f, 5.0f);
	glTexCoord2f(1.0f, 1.0f);
	glVertex2f(-5.0f, -5.0f);
	glTexCoord2f(0.0f, 1.0f);
	glVertex2f(5.0f, -5.0f);
	glEnd();
	glDisable(GL_TEXTURE_2D);
}

Change the coordinates where you paint the tank.

Well I have got the tank to move north and south but when I rotate the tank and try to move it west and east it snaps back to move north and south.

here is my updated code

void tankmove()
{
	glEnable(GL_TEXTURE_2D);

	glBindTexture(GL_TEXTURE_2D, texture[0]);

	if (direction[1] == 1)
	{
	glBindTexture(GL_TEXTURE_2D, texture[1]);
	direction[1] = 0;
	}

	if (direction[2] == 1)
	{
	glBindTexture(GL_TEXTURE_2D, texture[2]);
	direction[2] = 0;
	}

	if (direction[3] == 1)
	{
	glBindTexture(GL_TEXTURE_2D, texture[3]);
	direction[3] = 0;
	}

	if (direction[4] == 1)
	{
	glBindTexture(GL_TEXTURE_2D, texture[0]);
	direction[4] = 0;
	}

	if (direction_two[1] == 1)
	{
		glBindTexture(GL_TEXTURE_2D, texture[3]);
		direction_two[1] = 0;
	}

	if (direction_two[2] == 1)
	{
		glBindTexture(GL_TEXTURE_2D, texture[2]);
		direction_two[2] = 0;
	}

	if (direction_two[3] == 1)
	{
		glBindTexture(GL_TEXTURE_2D, texture[1]);
		direction_two[3] = 0;
	}

	if (direction_two[4] == 1)
	{
		glBindTexture(GL_TEXTURE_2D, texture[0]);
		direction_two[4] = 0;
	}

	glBegin(GL_QUADS);
	glTexCoord2f(0.0f, 0.0f);
	glVertex2f(5.0f, 5.0f + move_tank);
	glTexCoord2f(1.0f, 0.0f);
	glVertex2f(-5.0f, 5.0f + move_tank);
	glTexCoord2f(1.0f, 1.0f);
	glVertex2f(-5.0f, -5.0f + move_tank);
	glTexCoord2f(0.0f, 1.0f);
	glVertex2f(5.0f, -5.0f + move_tank);
	glEnd();
	glDisable(GL_TEXTURE_2D);
}
   

here is a screenshot

https://imgur.com/a/RIO6xYt