Cat lines

#include <stdio.h>
#include <stdlib.h>
int main(int argc, char **argv) {
  FILE *in, *out;
  int c;
  if (argc != 3) exit(1);
  in = fopen(argv[1], "r");
  out = fopen(argv[2], "w");
  while ((c = fgetc(in)) != EOF) {
    if (c != '\n') fputc(c, out);
  }
  return 0;
}