Program in C to reverse a number using pointer

\* C Program to to reverse a number using pointer *\

# include < stdio.h >
int   main( )
{

int   num, rem, rev=0  ;
int   *pn, *pr  ;
printf(" Enter the number : ") ;
scanf("%f ", & num) ;

pn = & num  ;
pr = & rev  ;

do
{

rem = ( *pn ) % 10  ;
*pr = ( *pr * 10 ) + rem  ;
*pn = ( *pn ) / 10  ;

}while(  *pn > 0 ) ;
printf("\n Reverse of Number is : %d ", *pr) ;
return ( 0 );

}