rotating an object constantly code example

Example 1: object spin unity

void FixedUpdate()
{
	gameObject.transform.Rotate(0, 0, +1)//Rotate(x, y, z) + = add one per update
}

Example 2: c# how to make object rotate forever

//Use FixedUpdate instead of Update for physics, rotation, and movement.
void FixedUpdate()
    {
        laserPointer.Rotate(x, y, z);
  		//Use your own rotation values to replace x, y and z.
    }