#define _POSIX_C_SOURCE 200809L

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

int main(int argc, char ** argv) {
  FILE *in_file;
  int i, error = 0, eof_reached = 0;
  char c, c_temp;

  for(i = 1; i < argc; i++) {
    if(argv[i][0] == '-' && argv[i][1] == '\0')
      in_file = stdin;
    else {
      in_file = fopen(argv[i], "r");
      if(in_file == NULL) {
        fprintf(stderr, "Cannot find file %s\n", argv[i]);
        error = 1;
        continue;
      }
    }
    eof_reached = 0;
    while(!eof_reached) {
      c = fgetc(in_file);
      switch(c) {
        case '1': printf("\f"); break;
        case '0': printf("\n"); break;
        case '+': printf("\r"); break;
        case EOF: eof_reached = 1; continue;
      }
      for(c_temp = fgetc(in_file); c_temp != '\n'; c_temp = fgetc(in_file)) {
        if(c_temp == EOF) {
          eof_reached = 1;
          break;
        }
        else
          printf("%c", c_temp);
      }
    }
    printf("\n");
  }

  if(error)
    return 1;
  else
    return 0;
}