/* Fig. 7.12: fig07_12.c
   Attempting to modify data through a 
   non-constant pointer to constant data. */
#include <stdio.h>

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

int main()
{
   int y;       /* define y */

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

   return 0;    /* indicates successful termination */

} /* 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 */




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