Ok now for the last 48 hours I have been trying to make recover work. First I made a program that got only 8 correct images. I posted my problem in this link and got a response and understood how my code had two back to back freads Recover first 8 images but no Cosecutive freads
So then decided to code again with somehow using just a single fread and fwrite and wrote this code, with this I am only getting 1 image and the terminal is hanging. I am too tired and frustrated right now to even figure out why the terminal is hanging i guess its probably due to the loop. But plz can someone give me clear hints in easy english if I am on the right track and what to do next. Really wanna finish this course and this pset
/**
* recover.c
*
* Computer Science 50
* Problem Set 4
*
* Recovers JPEGs from a forensic image.
*/
#include <stdio.h>
#include <stdint.h>
#include <cs50.h>
int main(int argc, char* argv[])
{
// open card file
FILE* inptr = fopen("card.raw", "r");
// check for errors
if (inptr == NULL)
{
printf ("could not open card. \n");
return 1;
}
// declaring a block of 8 bits of Type BYTE and having 512 blocks
typedef uint8_t BYTE;
BYTE block[512];
FILE* picture ;
int counter = 0;
while (fread(&block, 512, 1, inptr) > 0)
{
// checking for headers of JPEGs
if (block[0] == 0xff && block[1] == 0xd8 && block[2] == 0xff && (block[3] == 0xe0 || block[3] == 0xe1))
{
char name[9];
sprintf(name, "%03i.jpg", counter);
picture = fopen(name, "w");
while (true)
{
fwrite(&block, 512, 1, picture);
if (!(block[0] == 0xff && block[1] == 0xd8 && block[2] == 0xff && (block[3] == 0xe0 || block[3] == 0xe1)))
{
break;
}
}
fclose(picture);
counter++;
}
}
fclose(inptr);
}
