/*
 * Program: Global Communicator II - broadcaster dara converter
 * Programmer: Robert John Morton UK-YE572246C
 * Date:  Tue 22 Sep 2020

From the directory in which broadcasters.c resides: 
to compile: gcc broadcasters.c -o broadcasters */

#include <stdio.h>   // input output to/from the console and keyboard
#include <stdlib.h>  // standard functions for the 'C' language


void main() {
  FILE *FI = fopen("broadcasters.txt","rb");  // open the input file
  FILE *HS = fopen("broadcasters.dat","wb");   // open the output file

  fputc('1',HS);  // known to be 176 broadcasters
  fputc('7',HS);
  fputc('6',HS);
  for(int i = 3; i < 32; i++)
    fputc('\0',HS);

  for(int i = 0; i < 176; i++) {
    int x = 0, c;
    while(                     // While the next character is not a
      (c = fgetc(FI)) != '\n'  // carriage-return [end of line] and
       && x < 32) {            // 'c' character No 31 [the last] or below
      fputc(c,HS);             // write 'c' to the output .dat file
      x++;                     // and increment to next character number
    }

    if(x < 31)                 // less than 32 bytes written to output file
      for(int k = x; k < 32; k++)
      fputc('\0',HS);          // fill the rest of the record with spaces
  }
  fclose(FI);
  fclose(HS);
}