这是用C++编的一个数三角形的程序 适合初学者 首先用鼠标画点和线来构成三角形 然后从菜单中选择数三角形 屏幕上会显示出所画图形中一共有几个三角形-This is used C++ Made a number of procedures suitable for beginners triangle first painting with the mouse points and lines to form triangles and then from the menu select the