sleep（1）コールはFortranで何を意味しますか？

Question

 program democonstanta 

     implicit none 

c  constanta 
     integer, parameter :: MIN_VALUE = 0 
     integer, parameter :: MAX_VALUE = 100 

c  var declaration 
     integer :: i = MIN_VALUE  

     do while (i <=MAX_VALUE) 
     write(*,'(a14)') "Please wait... " 
     write(*,'(i3,a2)', advance='no') i, "%" 
     call sleep(1) 
     if (i .it. MAX_VALUE) then 
      call execute_command_line("clear") 
     end if 
     i = i + 1 
     end do 

     call execute_command_line("clear") 
     write(*,'(a3)') "End." 

     end program democonstanta 

Answer 1

参照：これは単に秒の所定の数の（待機）スリープhttps://gcc.gnu.org/onlinedocs/gfortran/SLEEP.html

。あなたの場合 - 1つ。