I would like to make a class and have it store it's own memory address as a private data member automatically when it is created. Additionally I would like to make a function within that same class which, when called on, can determine it's memory address and store it in the private date member. Is there a way to do this?
Maybe something like this?
http://www.parashift.com/c++-faq-lit...o-members.htmlCode:#include <iostream> class T { T *address; void (T::*mypfoo)(); public: T() : address(this) { std::cout << "address = " << address << '\n'; } void foo() { mypfoo = &T::foo; } }; int main() { T a, b, c; a.foo(); b.foo(); c.foo(); return 0; } /* my input/output address = 0012FF88 address = 0012FF84 address = 0012FF80 */
7. It is easier to write an incorrect program than understand a correct one.
40. There are two ways to write error-free programs; only the third one works.*
My understanding is that you just want the memory address of the class instance, not of the member functions. In that case it is already stored (no need for a private variable). The keyword 'this' is a pointer to the current object instance, and you can use it as the address of the instance.
As I understand, C++ simulates reference passing with pointers. When you call member functions of a class, you are essentially calling a global function with the particular instance of the class passed by reference as an argument.
There is also a way to get the addresses of member functions, if that's what you want. (Function pointers.) I think you can only do that outside of the member function, though. However, you can try to create a function object with a constructor (to get its address) and oerloaded operator(), and use a static instance for each class. The syntax might be a little convoluted, so you should have a very good reason for wanting to do this.
Code:#include <stdio.h> void J(char*a){int f,i=0,c='1';for(;a[i]!='0';++i)if(i==81){ puts(a);return;}for(;c<='9';++c){for(f=0;f<9;++f)if(a[i-i%27+i%9 /3*3+f/3*9+f%3]==c||a[i%9+f*9]==c||a[i-i%9+f]==c)goto e;a[i]=c;J(a);a[i] ='0';e:;}}int main(int c,char**v){int t=0;if(c>1){for(;v[1][ t];++t);if(t==81){J(v[1]);return 0;}}puts("sudoku [0-9]{81}");return 1;}
