#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define SIZE 2000

int main()
{
    FILE *filePtr;
    char arr[SIZE] = "";
    printf("Please enter the file you would like to open: \n");
    scanf("%s", arr);
    strcat(arr,".txt");

    filePtr = fopen(arr, "r");
       if(filePtr == NULL);
        {
            fprintf(stderr, "There was a problem opening the file \n");
            perror("Leaving now!!!\n");
            exit(-1);
        }

    while( fgets(arr, SIZE, stdin) )
        {
            printf("0x%s\n", arr);
        }

}