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#include <stdio.h>
#include <stdlib.h>
int main(int argc, char *argv[])
{
  if(argc != 2) {
    fprintf(stderr, "Usage: %s <file-name>\n", argv[0]);
    exit(1);
  }
  FILE *fd;
  fd = fopen(argv[1], "a");
  if(fd == NULL) {
    fprintf(stderr, "Error: Unable to open %s for reading.\n", argv[1]);
    exit(1);
  }
  char c;
  while((c = fgetc(fd)) != EOF) {
    putchar(c);
  }
  fclose(fd);
  return 0;
}
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