#include <stdio.h>



void foo(int*);




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

    int n = 77;

    printf("        n = %d\n  ",   n );
    printf("address n = %d\n\n",  &n );

    foo(&n);

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






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


    *p = *p - 20;
    printf("        n2 = %d\n  ",   *p );
    printf("address n2 = %d\n\n",    p );

}








/*


#include <stdio.h>



void foo(int);




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

    int n = 77;

    printf("        n = %d\n  ",   n );
    printf("address n = %d\n\n",  &n );

    foo(n);

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









/////////////////////////////////////////////////////
void foo(int n2)
{
    n2 = n2 - 20;
    printf("        n2 = %d\n  ",   n2 );
    printf("address n2 = %d\n\n",  &n2 );

}


*/






/*

#include <stdio.h>


namespace Sobolev
{

   int foo()
   {


     return 3 + 2;
   }

   int n = 77;
}

using namespace Sobolev;

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


    printf("n = %d\n", Sobolev::n );        Sobolev::n = Sobolev::foo();
    printf("n = %d\n", Sobolev::n );
}




*/
















//
/*

#include <stdio.h>


namespace Sobolev
{
   int n = 77;
}


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

    int n = 333;

    printf("size of int %d\n", sizeof(int) );
    printf("        n = %d\n",    n        );
    printf("address n = %d\n",   &n        );
    printf("        n = %d\n",  Sobolev::n );
}


*/


























/*
#include <stdio.h>

int n = 77;


int main()
{

    printf("size of int %d\n", sizeof(int) );
    printf("        n = %d\n",  n          );
    printf("address n = %d\n", &n          );
}








*/






















/*
#define _CRT_SECURE_NO_WARNINGS

#include <stdio.h>
#include <stdlib.h>

int main()
{

    int a = 93;


    if(a == 6) {  printf("%s\n", "apple" ); goto L_01; }
    if(a == 7) {  printf("%s\n", "orange"); goto L_01; }



    if(a == 8)
    {
        printf("%s\n", "mango");
        goto L_01;
    }

    if(a == 9)
    {

        printf("%s\n", "kiwi");
        goto L_01;
    }


    printf("%s\n", "error");

L_01:

return 0;
}
*/