usage of double pointers as arguments

Question

Please find the code snippet as shown below:

#include  

int My_func(int **); 

int main() 
{ 
     int a =5;
     int *p = &a;
     My_Fu         


        

Answer 1

Use it in the function declaration:

void func(int *p)
{
  int val =100;
  int *temp=&val;
  p=temp;
 }

p starts pointing to another address i.e. address of val. So it will print the value 100.

Important note: Try it in your downloaded compiler (always in case of pointers) not in the online compiler. The online compiler doesn´t keep track of lost addresses in stack.