c change pointer inside function code example

Example 1: c programm pointer change in function

void change(int **p, int *someOtherAddress) // **p *b allazei o p kai deixnei sto b //
{
    *p = someOtherAddress;
}

int a = 1, b = 2;
int *p = &a;

printf("*p = %d\n", *p);
change(&p, &b);
printf("*p = %d\n", *p);

Example 2: c programm pointer change in function

int* change_adrs(int *q) //me return kai anathesh: p=returned kai synarthsh me mesa *kati=&x x=5;//
      {                  //xwris reference, by value.Epistrefei apla dieythynsh kathorismenh sthn synarthsh panta to 875002//
      int * otheraddess;
      q = otheraddress;
      return q; 
      }


int main()
{
 p=change_adrs(p);
 return 0;
}