coding problem using salford FTN95

From: bab (bab_at_bab.bab)
Date: 11/03/04 

Date: Tue, 2 Nov 2004 23:33:45 +0000 (UTC)

Please help a friend who asked me about programming problem, I know nothing
about programming.

The problem is that he cannot make it calculate for values less than 0 but
above it is ok

Program
pi = 4*atan(1.0)
write(*,*)'diameter of cylinder?'
read(*,*)dia
write(*,*)'length of cylinder?'
read(*,*)length
sarea = pi*dia*length
vol = pi*(dia**2)*length/4.
write(*,*)' '
write(*,*)'diameter of cyl. =',dia
write(*,*)'length of cyl. =',length
write(*,*)'surface area of cyl. =',sarea
write(*,*)'volume of cyl. =',vol
stop
end program

thank you for your time.

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