devxlogo

Casting

Casting

Question:
Hi,got a problem with a cast. Maybe someone out there knows how to solve it. How can I get this void pointer to act like (point to) my object?example:

	myClass* mc;	void *vp;	mc = new myClass;	vp = (void *)mc;	vp->some_func();	//this doesn’t work! Why!			//Bjorn

Answer:
Because vp is a void pointer, it has no way to determine the address of some_func relative to the value of vp.You can work around this two ways. One is to use a pointer of the appropriate type. The other is to type cast the void pointer when you use it like this:

	myClass* mc;	void *vp;	mc = new myClass;	vp = (void *)mc;	((myClass*)vp)->some_func();

devxblackblue

About Our Editorial Process

At DevX, we’re dedicated to tech entrepreneurship. Our team closely follows industry shifts, new products, AI breakthroughs, technology trends, and funding announcements. Articles undergo thorough editing to ensure accuracy and clarity, reflecting DevX’s style and supporting entrepreneurs in the tech sphere.

See our full editorial policy.

About Our Journalist