/*
   addressreport.c

   Jeff Ondich, 5/15/08

   This program is for use in the takehome exam for CS332, Spring 2008.
   Its purpose is to report the addresses at which a variety of objects
   held in memory are stored.
*/

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

int f( int n );

int main()
{
    char *literalPtr = "This is a string literal.  Where is it stored?";

    printf( "the address of the function 'main': 0x%lx\n", (long)main );
    printf( "the address of the function 'f': 0x%lx\n", (long)f );
    printf( "the address of the function 'printf': 0x%lx\n", (long)printf );

    printf( "the address of main's local variable 'literalPtr': 0x%lx\n", (long)(&literalPtr) );
    printf( "the address of the string literal to which 'literalPtr' points: 0x%lx\n", (long)literalPtr );

    f( 5 );

    return 0;
}

int f( int n )
{
    char unusedBigParameter[2000];
    sprintf( unusedBigParameter, "some text for the unused array" );

    char *message = (char *)malloc( 100 * sizeof(char) );
    sprintf( message, "This message is from f(%d)\n", n );

    if( n > 0 )
    {
        printf( message );
        printf( "address of f's parameter 'n': 0x%lx\n", (long)(&n) );
        printf( "address of the f's variable 'message': 0x%lx\n", (long)(&message) );
        printf( "address of memory allocated dynamically in f(%d): 0x%lx\n", n, (long)message );

        f( n - 1 );
    }

    free( message );

    return 0;
}