c++ - creating a txt file to call f2() without modiying the code -

creating txt file call f2() without modiying code how input file , not modify code file have adress of f2() program print "hello world"

note: f2() address 00 40 10 14 , in reverse buffer on flow read 14 10 40 00

#include <iostream> #include <cstdio>  using namespace std; int i; unsigned int* p;  void f1() {     int a=10;     char str[4];      cout << "please enter string:";     while (!cin.eof()) {         cin.get(str[i]);         i++;     }      printf("address of str is:%x\n",str);     printf("address of is:%x\n",&a);     cout << "the string entered is:";     cout << str << endl; }  void f2() {     cout << "hello world!\n"; }  main() {      printf("the address of function f2:%08x\n",f2);     f1(); } 

you may @ example buffer overrun http://blogs.msdn.com/b/roberthorvick/archive/2004/01/16/59460.aspx