#include <stdio.h>

int main(int argc, char *argv[])
{
  FILE *f;
  char c;

  for (int i = 1; i < argc; i++) {
    f = fopen(argv[i], "r");

    if (f == NULL) {
      fprintf(stderr, "Cannot read input file \"%s\"\n", argv[i]);
      return 1;
    }

    do {
      c = fgetc(f);
      printf("%c", c);
    } while (c != EOF);
    fclose(f);
  }
}