program ch0504
implicit none
real :: light_minute, distance, elapse
integer :: minute, second
real, parameter :: light_year = 9.46*10**12
! Light_year : Distance travelled by light
! in one year in km
! Light_minute : Distance travelled by light
! in one minute in km
! Distance : Distance from sun to earth in
! km
! Elapse : Time taken to travel a
! distance (Distance) in minutes
! Minute : integer number part of elapse
! Second : integer number of seconds
! equivalent to fractional
! part of elapse
!
light_minute = light_year/(365.25*24.0*60.0)
distance = 150.0*10**6
elapse = distance/light_minute
minute = elapse
second = (elapse-minute)*60
print *, ' Light takes ', minute, ' Minutes'
print *, ' ', second, ' Seconds'
print *, ' To reach the earth from the sun'
end program