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Introducción a FORTRAN

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! Loop en dos dimensiones.<br />

N = 10<br />

do i=1,N<br />

do j=1,N<br />

! Coordenadas en el plano.<br />

x(i,j) = real(i)<br />

y(i,j) = real(j)<br />

! Calcular distancia al origen llamado a funcion "radio".<br />

end do<br />

end do<br />

r(i,j) = radio(x(i,j),y(i,j))<br />

! Llamar subrutina "escribir".<br />

call escribir(N,r,x,y)<br />

! Cerrar archivo.<br />

close(10)<br />

end program rutinas<br />

! Funcion "radio".<br />

function radio(x,y)<br />

! Declarar variables.<br />

implicit none<br />

31

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