While Fortran has been though to develop scientific applications, it can also be used for programmer amusement, here is a nice quine written in Fortran:
Program QUINE
character*51::code(16),li
integer::lin,qn,lqn
data code/&
'Program QUINE ',&
' character*51::code(16),li ',&
' integer::lin,qn,lqn ',&
' data code/& ',&
' do lin=1,4;print*,code(lin);enddo ',&
' do lin=1,15 ',&
' li=code(lin);qn=index(li,'''''''');lqn=0 ',&
' do while(qn/=0) ',&
' li=li(:lqn+qn-1)//''''''''//li(lqn+qn:50) ',&
' lqn=lqn+qn+1;qn=index(li(lqn+1:),'''''''')',&
' enddo ',&
' print*,'' '''''',li,'''''',&'' ',&
' enddo ',&
' print*,'' '''''',code(16),''''''/'' ',&
' do lin=5,16;print*,code(lin);enddo ',&
'end Program QUINE '/
do lin=1,4;print*,code(lin);enddo
do lin=1,15
li=code(lin);qn=index(li,'''');lqn=0
do while(qn/=0)
li=li(:lqn+qn-1)//''''//li(lqn+qn:50)
lqn=lqn+qn+1;qn=index(li(lqn+1:),'''')
enddo
print*,' ''',li,''',&'
enddo
print*,' ''',code(16),'''/'
do lin=5,16;print*,code(lin);enddo
end Program QUINE
(http://wwwep.stewartsplace.org.uk/quines/f90.html
(http://wwwep.stewartsplace.org.uk/quines/f90.html)
Gg1