/* reads a datafile in ASCII and saves it in binary format */
/* adding .bin to the filename given on the command line */
#include <stdlib.h>
#include <stdio.h>
#include <string.h>

FILE *binary;
FILE *ascii;

main(int argc, char *argv[])
{
int in, status;
char tmp[50];

ascii=fopen(argv[1], "r");
if (ascii==NULL) 
{
   printf("\ninput file does not exist - program stopped\n\n");
   exit(status);
}
strcpy(tmp, argv[1]);
strcat(tmp, ".bin");			/* add .bin to output filename */
binary=fopen(tmp, "w");			/* open output file */

while (fscanf(ascii, "%d", &in)>0)	/* read until end of file or error */		
{
   fputc(in, binary);			/* write as binary */
}
fclose(ascii);
fclose(binary);
}