Find The Address Of An Overloaded Function In C++| Find The Address Of An Overloaded Function In C++ In Hindi

Find The Address Of An Overloaded Function In C++

You can obtain the address of a function. One reason to do so is to assign the address of the function to a pointer and then call the function through that pointer. If the function not overloaded this process is straightforward, for overloaded function the process requires a little more subtlety. To understanding the first consider this statement which assigns the address of some function called myfunc() to pointer called p:

p=myfunc;

If myfunc() is not overloaded there is one and only one function called myfunc(),and the compiler has no difficulty assigning its address to p.

 

Fig: Find The Address Of An Overloaded Function In C++

Program:

#include<iostream.h>

class BCA;

int myfunc(int a);

int func(int a, int b);

int main()

{

int (*fp) (int a);

fp=myfunc;

cout<<”fp(5);

return 0;

}

int myfunc(int a)

{

return a;

}

int myfunc(int a,int b)

{

return a*b;

}

 

Here , there are two type version of myfunc(). Both return int, but take a single integer argument; the other requires two integer aruguments. In the program, fp is declared as a pointer to a function the return an integer and that take one integer argument. When fp is assigned the address of myfunc(), c++ uses this information to select that myfunc(int a) version of myfunc(). Had fp been declared like this:

int (*fp) (int a, int b);