Go4Expert - string to pointer

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string to pointer

Hi,
I'm writing an address into a file and later i need to read it as an address. I've copied this address into a character array and am having a lot of trouble trying to convert it back into a pointer.
The pointer initially (when writing to the file) was a void pointer.
Please help.
here's what i tried:

Code:

#include<iostream> 

#include<string> 

#include<stdio.h> 

#include<fstream> 

using namespace std; 

void * operator new(size_t size) 

{ 

    cout<<"\nOVERLOADED NEW"; 

    void * MemHandle; 

    MemHandle=malloc(size); 

    if(!MemHandle) 

    { 

        bad_alloc ba; 

        throw ba; 

    } 

    ofstream out; 

    out.open("D:/Project/abc.txt",ios::app); 

    out<<"\n"<<(unsigned long int*)MemHandle; 

    out.close(); 

    cout<<"\nmem handle:"<<MemHandle<<endl; 

    return MemHandle; 

} 

void main() 

{ 

    fstream in("D:/Project/abc.txt"); 

    int *p=new int; 

    char buf[20]; 

    in.getline(buf,8); 

    buf[8]='\0'; 

    cout<<"buf:"<<(unsigned long int*)buf; 

}

Re: string to pointer

The output was :

OVERLOADED NEW
mem handle:003552A0
buf:0012FE9

i needed the buf to hold the initial value.
Please help and Thanks in advance.

Re: string to pointer

What does the file contain?
(If you open it in a hex editor then you'll know exactly. Try xvi32)

Re: string to pointer

Thank you but i got it. I wrote it as an unsigned long and read it back into a void * and it worked
:)