Program in C to find the greatest of three number using pointer

\* C Program to to find the greatest of three number using pointer *\

# include < stdio.h >
int   main( )
{

int   a, b, c  ;
int   *p1, *p2, *p3  ;
printf(" Enter the first number : ") ;
scanf("%d ", & a) ;
printf("\n Enter the second number : ") ;
scanf("%d ", & b) ;
printf("\n Enter the third number : ") ;
scanf("%d ", & c) ;

p1 = &a  ;
p2 = &b  ;
p3 = &c  ;

if((  *p1> = *p2 ) & & (  *p1> = *p3 ))
printf("\n The Greatest Number is : %d ", *p1) ;
else
{

if((  *p2> = *p1 ) & & (  *p2> = *p3 ))
printf("\n The Greatest Number is : %d ", *p2) ;
else
printf("\n The Greatest Number is : %d ", *p3) ;
}

return ( 0 );

}