Deletes characters from text files

The new file would be "12456"

The new file would be "12456"

File IO? fopen/fread/fwrite/fseek/fclose etc

You'll need to manually manage this, there isn't a magic command to remove characters.

And, how I do it manually?, I want to delete for example the last character, without erasing all the data in the file. "fopen/fread/fwrite/fseek/fclose etc" which I can use?

I always use the function fdeletecharatposition3fromfile() to do this.

Remember to include the library deletecharfromfile.lib. It has a lot of separate functions to delete specific characters from specific positions for files of a specific length. Be warned, it's a very large library because there are a lot of combinations it has to cope with.

If someone does write a number of characters on a ribbon - how do you then remove a character somewhere in the middle of that ribbon without cutting and splicing the ribbon? Erase and write the characters again? Or maybe get a new ribbon and copy the characters you want to keep to the new ribbon?

#include <windows.h>
#include <stdio.h>

int main(int argc, char **argv)
{
  FILE *f;

  char *buffer;
  size_t size;

  f = fopen("temp.txt","rb");

  if (f)
  {
    fseek(f, -1, SEEK_END);
    size = ftell(f);
    fseek(f, 0, SEEK_SET);
    buffer = malloc(size);
    fread(buffer, size, 1, f);
    fclose(f);


    f = fopen("temp.txt","wb");

    if (f)
    {
      fwrite(buffer, size, 1, f);
      fclose(f);
    }

    free(buffer);
  }

// Other architectures might permit

//    fseek(f, -1, SEEK_END);
//    fwrite((void *)f, 0, 0, f);

//    fseek(f, -1, SEEK_END);
//    ftruncate(f);

  return(1);
}

thanks, you're very kind for your help.