# include <stdio.h>

int month_length ( int month, int year );

int main ( )
{
  int days;
  int month;
  int year;

  printf ( "Enter a month and year as integers: " );
  scanf ( "%i%i", &month, &year );

  days = month_length ( month, year );

  printf ( "In %i, month #%i has %i days.\n", year, month, days );

  return 0;
}