#include <stdio.h>

int main()
{
  int startDay, daysMonth, gap, date;

  printf ("Enter Start Day [0-Sun ... 6-Sat]: ");
  scanf ("%d", &startDay);
  
  printf("Enter Number of Days in Month: ");
  scanf ("%d", &daysMonth);

  printf ("  S  M  T  W  T  F  S\n");
  for ( gap = startDay; gap>0; gap-- )
    printf ("   ");
  for ( date = 1; date <= daysMonth; ++date ) {
    printf ("%3d", date);
    if ( (date+startDay)%7 == 0 ) printf("\n");
  }
  printf ("\n");

  return 0;
}