#include <stdio.h>
#include <string.h>
#define WIDTH 8

int count=0;
char *decfmt="%d\t";
char *octfmt="0%o\t";
char *hexfmt="0x%x\t";

int printascii(char *fmt, FILE *infp)
{

  int c;
  while( (c = fgetc(infp)) != EOF){
    printf(fmt,c);
    count = (count + 1) %8;
    if (count == 0 ){
      putchar('\n');
    }
  }
}


int main(int argc, char **argv)
{
  char *progname = argv[0];
  int status = 0;
  FILE *fp;
  char  *fmt;

  if(strcmp("asciih", progname) == 0){ 
    fmt = hexfmt;
  }else if( strcmp("asciio", progname) == 0 ){
    fmt = octfmt;
  }else {
    fmt = decfmt;
  }


  if( argc < 2) {
    printascii(fmt,stdin);
    putchar('\n');
    return 0;
  }
  
  for(int i = 1; i < argc; i++){
    fp = fopen(argv[i],"r");
    if( fp == NULL){
      fprintf(stderr,"%s: could not open %s\n", progname, argv[i]);
      status++;
    }
    else
      printascii(fmt, fp);
  }
  putchar('\n');
  return status;
}