ASCII code goes into minus

i want to read a binary file character by character and want to get ASCII code for each of these characters. but when i display the ASCII code, most of the values are in minus. is there any way to not get the ASCII numbers in minus or am i perhaps doing something wrong?

thanks!

Perhaps you are, but without seeing some code, who knows what the exact solution would be.

Here is the code:

Code:

---


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

int main()
{

  FILE * InputFile;
  FILE * OutputFile;
  char c;
  char fc[3];
 
  InputFile = fopen("Test.mp3","rb");
  OutputFile = fopen("Test.txt","wb");
  if (InputFile == NULL) {
    perror ("Error while opening input file");
  } else if (OutputFile == NULL) {
    perror ("Error while creating output file");
  } else {
    while (!feof(InputFile)) {
      c = fgetc (InputFile);
      sprintf(fc,"%.3d",c); // 3-digit ASCII code, as 005, 068
      fputs(fc,OutputFile); // putting string fc into the file
    }
  }
  fclose(InputFile);
  fclose(OutputFile);
  printf("Done.\n");
  return 0;
 
}

---

Make c an int.
Make fc a larger array, 3 isn't enough to hold 3 chars and a \0
See the FAQ about using feof() in a control loop.

Thanks, repaired and working.