program day_of_week
implicit none
character(len=11)::c_day
integer::i_day
print *,'Enter the day of the week(1-7):'
read *,i_day
select case(i_day)
case(1)
c_day='Sunday'
case(2)
c_day='Monday'
case(3)
c_day='Tuesday'
case(4)
c_day='Wednesday'
case(5)
c_day='Thursday'
case(6)
c_day='Friday'
case(7)
c_day='Saturday'
case default
c_day='Invalid day'
end select
print *,'Day=',c_day
end program
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