#include   <stdio.h>

int n = 5;

///////////////////////////////////////////////////
int main()
{

    int *p = &n;


    printf("address n = %d\n",  p);
    printf("        n = %d\n", *p);
}



















/*



#include   <stdio.h>


struct Cdog
{

    int   nAge;

    float fWeight;

} dog1, dog2;



Cdog dog3, dog4;


void fDog(Cdog *p);


///////////////////////////////////////////////////
int main()
{

    Cdog dog5, dog6;



    dog3.nAge    =   3;
    dog3.fWeight = 0.2;

    dog6.nAge    =  11;
    dog6.fWeight = 1.241;

    fDog(&dog6);
}





///////////////////////////////////////////////////
void fDog(Cdog *p)
{

     printf("nAge    = %d  \n", p->nAge   );
     printf("fWeight = %.3f\n", p->fWeight);
}

*/




/*
#include   <stdio.h>



void swap(int &p1, int &p2);
void print(int *p, int n);

///////////////////////////////////////////////////
int main()
{

    int nArr[99] = {5, 11, 2, 6, 34, 1, 7};

    swap(nArr[0], nArr[4]);

    print(nArr, 7);
}















////////////////////////////////////////////////////
void print(int *p, int n)
{

     for(int i = 0; i < n; i++)
     {

          printf("%d, ", p[i]);
     }
    printf("\n");
}



///////////////////////////////////////////////////
void swap(int &r1, int &r2)                       //
{

     int n  = r1;
         r1 = r2;
         r2 = n ;
}






*/











/*

#include   <stdio.h>



void swap(int *p1, int *p2);
void print(int *p, int n);

///////////////////////////////////////////////////
int main()
{

    int nArr[99] = {5, 11, 2, 6, 34, 1, 7};

    swap(&nArr[0], &nArr[4]);

    print(nArr, 7);
}















////////////////////////////////////////////////////
void print(int *p, int n)
{

     for(int i = 0; i < n; i++)
     {

          printf("%d, ", p[i]);
     }
    printf("\n");
}



///////////////////////////////////////////////////
void swap(int *p1, int *p2)                       //
{


     int n = *p1;

     *p1 = *p2;

     *p2 = n;

}



*/




















/*
#include  <iostream>
#include  <string.h>
#include   <stdio.h>
using namespace std;


  struct Dog
  {
       int  Age;
       char color[99];
      float weight;

  };


void foo(Dog *p);


///////////////////////////////////////////////////
int main()
{

   Dog y, u, w;

   y.Age = 4;
   u.Age = 8;
   w.Age = 5;

   w.weight=0.20;
   strcpy(w.color, "Blue" );
   strcpy(u.color ,"brown"  );

   y.color[0] = 'B';
   y.color[1] = 'l';
   y.color[2] = 'a';
   y.color[3] = 'c';
   y.color[4] = 'k';
   y.color[5] =  0 ;


   foo(&w);


}

//////////////////////////////////////////////////////////
void foo(Dog *p)                                        //
{

    printf("u.color  = %s\n"  , p->color );
    printf("u.Age    = %d\n"  , p->Age   );
    printf("w.weight = %.2f\n", p->weight);
}



*/