function to point to a global nested stucture

I am having trouble in writing a function which assigns pointer to the address of global nested structure. But i would like that to be done inside a function, not with in main Please help me in writing the function. Thanks in advance

#include "stdio.h"

typedef struct
{
    int 开发者_JAVA技巧c;
}code;

typedef code* p_code ;

typedef struct
{
    char a;
    int b;
    code krish; 
}emp;

emp Global_Sam;

int main()
{
    code tmpcode_krish; 
    code* pcode_krish;

    pcode_krish = &tmpcode_krish;

    printf("Goal %p  %p \r\n ", &(Global_Sam.krish), &(Global_Sam).krish);
    memset(pcode_krish, 0 , sizeof( code));
   // pcode_krish = &Global_Sam.krish;

    PointNestedStructToPointer(&pcode_krish);
    printf("Goal=> both should be same => %p  %p \r\n ", &(Global_Sam.krish), pcode_krish);
    return 0;
}

Here, => pcode_krish = &Global_Sam.krish; this will point to the global nested structure. But i need to do that inside a function, hence the function, PointNestedStructToPointer

void PointNestedStructToPointer(p_code *dst )
{
    dst = &Global_Sam.krish;
}

The above function doesn't reflect the exact address of the global nested structure, i have put prints a verified. Please help

If you want the equivalent of

dst = &src;

Inside a function you have two options:

1. Pass the address of a pointer to the function:

   void doit(code **p)
   {
       *p = &src;
   }
   
   // later
   doit(&pcode_krish);
   

2. Return the pointer from the function and do the assignment yourself:

   code *doit(void)
   {
       return &src;
   }
   
   // later
   pcode_krish = doit();
   

Dereference dst when making the assignment in PointNestedStructToPointer():

*dst = &Global_Sam.krish;