Error and Die - Simple function to exit the program with error code

end.c

#include <stdarg.h>

// END - Error and Die
void end(const char *fmt, ...) {
  va_list ap;
  va_start(ap, fmt);
  vfprintf(stdout, fmt, ap);
  fprintf(stdout, "\n");
  fflsuh(stdout);
  va_end(ap);
  exit(1);
}