Write a Program in C That Attempting To Modify Data Through a Non-Constant Pointer To Constant Data

// Attempting to modify data through a 

// non-constant pointer to constant data.

#include <stdio.h>

void f( const int *xPtr ); // prototype

int main( void )

{

   int y; // define y

   f( &y ); // f attempts illegal modification

} // end main

// xPtr cannot be used to modify the 

// value of the variable to which it points

void f( const int *xPtr )

{

   *xPtr = 100; // error: cannot modify a const object

} // end function f