// Assignment 3
// 
// Lists characters from the memory starting from a given address
// until an end address.
// No address control so be careful.
//

#include <stdio.h>

int main(void)
{

 char  i = 'a';     // A test assignment //
 char *sptr;
 char *eptr;
 FILE *ofile;
 char filename[30];

 sptr = &i ;        // sptr points to i, in order to get an example address   //

 printf("--------------------------------------------------------- \n");
 printf("Example address, using a simple character assignment (%c) \n",i);
 printf("Example position: %p \n\n",sptr);


 printf("Enter a starting address\n");
 scanf("%x",&sptr); // Read start address //
 
 printf("Enter an ending address\n");
 scanf("%x",&eptr); // Read end address   //


 printf("Please type in the name of the file you want the output\n");
 scanf("%s",filename);


 ofile = fopen (filename,"w");

 for (; sptr <= eptr; sptr++){  // Move pointer until it reaches the end po. //
	
	if (isgraph(*sptr)) {
	 fprintf(ofile,"%c", *sptr);  // Printing only readable characters //
	}
 }

 fclose(ofile);

 return 0;
}